Bringing Soda and Water on a Cruise: What It Really Saves

Carnival raised Bottomless Bubbles from $9.50 to $11.99 a day on April 2, 2026. I went to re-run the break-even against what a single soda costs, and could not get a straight answer on the soda. That turned a simple question into a more useful one.

The rules, from the lines themselves

Carnival is the most generous of the three big lines here. Each guest may carry aboard a maximum of 12 sealed, unopened cans or cartons of 12 ounces (354 ml) each or less, and the policy puts them in your carry-on rather than your checked bag. The same 12-can allowance applies again while in port, and the beverages the policy names include sparkling water, sodas, energy drinks, juice and milk. What Carnival will not take is a non-alcoholic bottle: guests are prohibited from bringing water, sodas and other non-alcoholic beverages packaged in glass or plastic bottles. Wine is the carve-out, at one sealed 750 ml bottle per guest aged 21 or older, with a $15 corkage fee if you drink it in a dining venue. (Source: Liquor and Beverage Policy, Carnival, verified September 2026. The bottle prohibition also appears on Important Information to Know Before You Go, Carnival, verified September 2026.)

Royal Caribbean flips the unit. Non-alcoholic beverages may not exceed 12 standard 17-ounce cans, bottles or cartons per stateroom. Bottles are fine here, so water counts. Milk and distilled water for infant, medical or dietary use sit outside the limit, and each guest of drinking age may bring one sealed 750 ml bottle of wine or champagne on boarding day. (Source: What kind of food or drinks am I allowed to bring onboard, Royal Caribbean, verified September 2026.)

Norwegian allows no soft drinks at all. Guests are prohibited from bringing any beverages, including liquor, beer and non-alcoholic drinks such as water, soda and juices, on board either as carry-on or checked luggage, a rule that has stood since July 15, 2016. Two things get through: purified or distilled water in factory-sealed containers for use with a medical device or for reconstituting infant formula, which needs pre-approval from the access desk, and sealed or corked wine, which is screened and charged corkage of $15 for a 750 ml bottle or $30 for a magnum. Open beverages of any kind get consumed or discarded at the security checkpoint, on embarkation day and at every port of call. (Source: Can I bring water or soda on board, NCL, verified September 2026; and What is the alcohol and beverage policy, NCL, verified September 2026.)

That is the whole of the rulebook. The rest of this is what those rules are worth once you put a price on them.

The per-person versus per-cabin split

That middle column is the part that catches people. Both volumes are ceilings, since Carnival's rule reads 12 ounces "or less" and nobody has to fill the allowance.

Sail alone and Royal wins. One person on Carnival gets 144 ounces. That same person on Royal Caribbean gets the full stateroom allowance of 204 ounces, about 42 percent more, because the cabin limit does not care that only one of you is in it.

Add a second person and it flips. A couple on Carnival can board 24 cans, or 288 ounces, against the same fixed 204 for the Royal cabin. Carnival gives the pair about 41 percent more, and because Carnival's number scales with heads while Royal's does not, the gap only widens from there. Single occupancy is the one case where Royal comes out ahead.

Volume is not the same as value, either. Royal's 204 ounces can be bottled water and Carnival's 288 cannot, which matters a great deal to anyone who drinks more water than soda, and which is the subject of the bottled-water section below.

Nobody agrees on what a Carnival soda costs

Here is the thing that sent me down this road.

Carnival's own Bottomless Bubbles page lists a soft drink at $2.75. Two cruise publishers tracking 2026 bar menus both put it at $3.50. (Source: Bottomless Bubbles Package, Carnival, verified September 2026; Carnival Bar Menus and Drink Prices 2026, Cruise Spotlight, verified September 2026; and Drink Packages on Carnival, EatSleepCruise, verified September 2026.)

I would not treat either as gospel, and the reason is the same on both sides. The Carnival page showing $2.75 also still displays the pre-April Bottomless Bubbles rates, five months after they were replaced, alongside a card advertising the current $11.99. The EatSleepCruise page showing $3.50 quotes the package at $11.21 a day with gratuity included, which is the old $9.50 rate grossed up at the old 18 percent service charge, so it is stale twice over. Both pages carry at least one out-of-date number, so neither earns the right to be the single source for a figure the whole calculation rests on. Staleness in a price is not the same as staleness in a product spec, though, which is why I am still willing to take the serving size and the exclusion list off Carnival's page further down.

So run it at both. Everything below is calculated twice.

The package itself is firm, because Carnival's product page and the coverage of the increase agree on it. Bottomless Bubbles is $11.99 per person, per day for adults plus a 20 percent service charge, which is $14.39 a day. Carnival raised it from $9.50 on April 2, 2026 and left the rate for children 17 and under at $6.95. It can only be bought for the full cruise. (Source: Bottomless Bubbles, Carnival, verified September 2026; and Carnival Raising Daily Gratuities, Bottomless Bubbles Package in April 2026, Cruise Radio, verified September 2026.)

Where the break-even actually sits

Start with the plain version and derive it rather than repeating a rule of thumb.

Every break-even below counts one unit as one poured 16-ounce glass, which is how Carnival serves soda, so keep that unit in mind whenever a number in this section says "a day."

Package: $11.99 a day, plus 20 percent, is $14.39. Soda at $3.50, plus 20 percent, is $4.20. Divide: 14.39 / 4.20 = 3.4 poured glasses a day. At $2.75 a soda it is 4.4.

Notice what the service charge did there, which is nothing. The same 20 percent sits on the package and on the glass, so it appears in the numerator and the denominator and cancels straight out. $11.99 / $3.50 gives 3.4 as well. A percentage applied to both sides of a ratio does not move it, so the all-in break-even and the sticker break-even are the same number.

Now bring your cans, and mind the units. Carnival pours soda by the glass at 16 ounces, and your carry-on cans are 12. (Source: Bottomless Bubbles Package, Carnival, verified September 2026.) Twelve cans is 144 ounces, which is nine poured glasses, not twelve. Counting one can as one drink overstates the allowance by a third against the nominal pour.

Two assumptions are buried in that conversion and both deserve saying out loud. I am applying Carnival's 16-ounce pour to both price points, since neither bar-menu tracker states a serving size. And I am treating a 16-ounce glass as 16 ounces of soda, which no fountain glass ever is once the ice goes in. Carnival does not publish an ice ratio and I am not going to invent one, but the direction is not in doubt: a glass that is a third ice delivers under 11 ounces of soda, and 144 ounces of cans would then replace 13 or 14 glasses rather than nine. Every carry-on break-even below is therefore a floor rather than a midpoint, and your real one sits higher.

Over a 7-day sailing the package costs $83.93 per person before the service charge. At $3.50 a glass, that is 23.98 glasses you would have to buy before it pays for itself. Nine of them come out of your carry-on for free, so you need 32.98 glasses across the week, or 4.7 a day. At $2.75 the same arithmetic gives 5.6 a day.

Whichever price is right, the shape holds: a case of soda in your suitcase adds about one and three-tenths glasses a day to the bar you have to clear. That is enough to flip the decision for a lot of people. Someone drinking four glasses a day is a buy at the $3.50 price and a skip once the cans are counted, and someone drinking five is in exactly that position at the $2.75 price.

In dollars, one person's nine free glasses are worth $29.70 at Carnival's price or $37.80 at the bar-menu price. Set that against what that same person spends on the package, which is $11.99 across 7 days plus 20 percent, or $100.72, and the allowance covers 29.5 to 37.5 percent of it. Useful, not decisive. A couple doubles both sides and lands on the same percentage, since the package is priced per head.

One more lever sits in the policy. Carnival's 12-can allowance resets in port, not just at embarkation. A guest on a Caribbean itinerary with three port calls who actually walks to a shop and buys a 12-pack each time boards 48 cans, or 36 poured glasses, which pushes the break-even to 8.6 glasses a day at $3.50 sodas and 9.5 at $2.75. Almost nobody drinks eight or nine glasses of soda a day, which is the point: do that and the package stops being buyable at all. Most people will not haul four cases through a cruise terminal, and I would not plan a budget around it.

Run your own count through the Carnival drink package calculator and subtract the cans you plan to bring before you decide.

The bottled water trap on Carnival

This is the one that costs people money without their noticing.

Bottled water cannot come aboard a Carnival ship, because it is in a bottle. It also is not covered by Bottomless Bubbles: Carnival lists bottled water under what the package excludes. (Source: Bottomless Bubbles Package, Carnival, verified September 2026.)

So a guest who mainly drinks water can buy a soda package that does not cover the thing they drink, with no way to carry their own aboard. Carnival prices bottled water between $1.50 and $5.00 depending on the product, and Cruise Spotlight puts a typical bottle around $3. (Source: Non-Alcoholic Packages, Carnival, verified September 2026; and Carnival Bar Menus and Drink Prices 2026, Cruise Spotlight, verified September 2026.) The package that does include bottled water is CHEERS!, at $69.95 a day plus 20 percent, or nearly $84 a day, and that is an alcohol package a non-drinker has no business buying. (Source: CHEERS! Package, Carnival, verified September 2026.)

The way around it is sitting in the policy text quoted at the top of this piece: sparkling water is named among the beverages you may carry aboard in cans or cartons. (Source: Liquor and Beverage Policy, Carnival, verified September 2026.) Canned water clears the rule that bottled water fails, so on Carnival the format of the container is worth more attention than the brand.

This is also where Royal Caribbean's smaller allowance earns back the ounces it gives up. Its 12 containers can be bottled water, so a water drinker on Royal solves the problem from their suitcase and a water drinker on Carnival has to solve it with cans or with a bar tab. On Norwegian there is no suitcase solution at all.

The bottom line

Two of these lines let you bring soft drinks aboard and one does not. On Carnival the allowance is worth $29.70 to $37.80 a person, and it moves the Bottomless Bubbles break-even from about 4 poured glasses a day to between 4.7 and 5.6, and higher still once you allow for the ice in the glass. That is roughly a third of the package price recovered before you board, and enough to change the answer for anyone drinking four or five a day.

Two practical things follow. Pack cans rather than bottles if you are sailing Carnival, since the container decides whether it boards, and multiply the allowance by heads rather than by cabins, because a family of four is owed four allowances. And if Norwegian is on your shortlist, remember that every ounce anyone in the party drinks is bought onboard at Norwegian's price, which is a line item the fare comparison will not show you.

Frequently asked questions

Can you bring bottled water on a Carnival cruise? No. Carnival prohibits water, sodas and other non-alcoholic beverages packaged in glass or plastic bottles. Cans and cartons up to 12 ounces are allowed, 12 per person, in your carry-on, so canned or carton water is the way to do it. (Source: Liquor and Beverage Policy, Carnival, verified September 2026.)

How many drinks can you bring on a Royal Caribbean cruise? Twelve standard 17-ounce cans, bottles or cartons of non-alcoholic beverages per stateroom. Bottles are permitted, and milk or distilled water for infant, medical or dietary use falls outside the limit. (Source: What kind of food or drinks am I allowed to bring onboard, Royal Caribbean, verified September 2026.)

Can you bring water on a Norwegian cruise? Only purified or distilled water in factory-sealed containers for use with a medical device or for reconstituting infant formula, and that needs pre-approval from NCL's access desk. Every other beverage is prohibited in both carry-on and checked luggage, apart from sealed wine, which is allowed subject to screening and a corkage fee. (Source: Can I bring water or soda on board, NCL, verified September 2026.)

Is Bottomless Bubbles worth it? At $11.99 per person, per day plus 20 percent, it pays off somewhere between 3.4 and 4.4 poured 16-ounce glasses a day if you bring nothing aboard, and between 4.7 and 5.6 a day once you use Carnival's 12-can carry-on allowance on a 7-day sailing. The range depends on whether a soda costs $2.75 or $3.50, which Carnival's own page and the 2026 bar-menu trackers disagree on. It also has to be bought for the full cruise. (Source: Bottomless Bubbles, Carnival, verified September 2026; and Carnival Bar Menus and Drink Prices 2026, Cruise Spotlight, verified September 2026.)

Does Bottomless Bubbles include bottled water? No. Carnival lists bottled water among the exclusions. CHEERS! includes it, but that is an alcohol package at $69.95 a day plus 20 percent, or nearly $84. (Source: Bottomless Bubbles Package, Carnival, verified September 2026; and CHEERS! Package, Carnival, verified September 2026.)

Can you bring wine on a cruise? On Carnival, one sealed 750 ml bottle of wine or champagne per guest aged 21 or older, in your carry-on, with a $15 corkage fee if you drink it in a dining venue. Royal Caribbean allows one sealed 750 ml bottle per guest of drinking age on boarding day. Norwegian permits sealed or corked wine subject to screening, with corkage of $15 for a 750 ml bottle or $30 for a magnum. (Source: Liquor and Beverage Policy, Carnival, verified September 2026; What kind of food or drinks am I allowed to bring onboard, Royal Caribbean, verified September 2026; and What is the alcohol and beverage policy, NCL, verified September 2026.)

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Allowances and prohibitions are quoted from the official Carnival, Royal Caribbean and Norwegian policy pages linked above. Package rates come from Carnival's own product page and the coverage of the April 2026 increase. A la carte soda prices come from both Carnival's site and the cruise publishers linked above, which do not agree with each other, so both figures are carried through the math rather than averaged. Current as of September 2026. Bar prices vary by ship and venue and policies change without much notice, so confirm both against your own booking before you budget around them.