Water
Expectation: Because you’re on top of the water, you might believe there’ll be plenty of water on deck. Or that Disney will make sufficient provisions for water on the ship, just as there is soda on the ship—soda is in plentiful supply.
Reality: There are no water fountains on board, disposable bottles are expensive, and the best location to get a drink is at the complimentary soda machines on Deck 9 or 11, which can be quite far away. (Although the tap water in each room is safe to drink, sinks are frequently too tiny to fit large containers.) You can bring bottled water with you, but you’ll have to carry it through the checkpoint.