I have good news for you! Guests are able to carry their own soda onboard. Any food or drinks brought on the ship need to be unopened and in their original packaging. You'll need to bring it with you in a day bag, it cannot be in your checked luggage, so you won't be able to bring more than you're comfortable carrying.

Whether you can bring a pack of soda on a cruise depends entirely on the specific cruise line's policy, as they vary significantly. Royal Caribbean and Carnival generally allow each guest to bring a small quantity of non-alcoholic beverages (usually a 12-pack of cans or cartons, no bottles) in their carry-on luggage on embarkation day. However, Norwegian Cruise Line (NCL) has a very strict policy that prohibits guests from bringing any beverages—including water and soda—on board, regardless of the packaging. Lines like Disney Cruise Line are more generous, allowing guests to bring a reasonable amount of non-alcoholic drinks in their carry-on. It is a common "travel pro-tip" to always check your specific cruise line’s "Prohibited Items" list before you leave, as these rules are strictly enforced at the security scanner. If you do bring soda, it must be in your carry-on; if you put it in your checked luggage, it will likely be confiscated by the ship’s security team during the screening process to prevent leaks and the potential smuggling of alcohol inside soda containers.