Yes, you are free to carry drinks around a cruise ship, whether they are complimentary beverages from the buffet or cocktails purchased at a bar. In 2026, most major lines like Royal Caribbean, Carnival, and Norwegian allow you to walk through public areas, lounges, and even onto the pool deck with your glass or reusable tumbler. If you have a beverage package, you can simply order a drink at one bar and carry it with you as you explore the ship or head to a show. The only major restriction is usually taking drinks into certain sensitive areas like the gym or the spa, and you generally cannot bring your own alcohol (aside from a permitted bottle of wine brought at embarkation) into public bars or dining rooms without paying a corkage fee. Many experienced cruisers bring their own insulated, spill-proof tumblers to keep their water or frozen drinks cold for longer while they move between the sunny decks and air-conditioned interiors.