In 2026, Princess Cruises has a strict policy regarding the carriage of beverages: you cannot bring plastic water bottles onboard. This policy is part of the cruise line's broader sustainability initiative to reduce single-use plastics across its fleet. If a guest wishes to have water in their cabin, they can purchase pre-paid water packages through the "OceanReady" app or use the "OceanNow" service to have water delivered anywhere on the ship via their Medallion. However, Princess does allow guests to bring a limited amount of canned or cartoned non-alcoholic beverages (like soda or sparkling water), usually limited to 12 cans per person. Guests are also highly encouraged to bring reusable water bottles, which can be filled for free at any of the filtered water stations or buffet areas throughout the ship. This shift in 2026 reflects a maritime-wide trend toward eco-friendly travel, ensuring that the convenience of bottled water does not come at the expense of ocean health and waste management systems.