No regulations that says you can't. Obviously, you can't use it on the ship, but no reason why you can't bring it to use it in port.
Travel Agent/Cruise Specialist w/14 yrs exp and 50 Cruises on 12 different cruise lines in many parts of the world! Vietnam Veteran Owned & Operated. Certified Accessible Travel Advocate. Specializing in unsurpassed personal service to insure you have a hassle-free vacation!