Can I bring a case of bottle water on the ship?
There are two answers to this question, the rule and the reality.
Royal Caribbean's rule about bringing bottled water, or any beverages, is simple: Guests are not allowed to bring beer, hard liquor, fortified wines or non-alcoholic beverages onboard for consumption or any other use on boarding day or while in port.
In practice, when it comes to bottled water and even soft drinks, we've rarely seen this rule enforced. We cannot guarantee you will not have your water confiscated but if you felt very strongly about trying to bring bottled water with you, then we would recommend putting the bottled water in your carry on luggage and hoping for the best.
By far, Royal Caribbean is much more concerned with guests attempting to bring alcohol onboard than bottles of water. But you should be aware that technically it is against the rules to bring any beverage onboard.