We asked the folks at Royal Caribbean, Carnival, and Norwegian Cruise Lines what we cannot bring on board with us during a cruise. Generally, they're very similar in their prohibitions. Weapons, illegal drugs, and other items that could interfere with the safe operation of the ship or the safe and secure environment of guests and crew are prohibited. Alcoholic beverages, illegal drugs, flammable liquids, explosives, and dangerous chemicals will be confiscated and not be returned. Watch our video for more.
http://www.royalcaribbean.com/customersupport/faq/details.do?pagename=frequently_asked_questions&faqId=2608&faqSubjectId=333
