If there is some specific item that you need to know about feel free to ask about that.
This is the list from Royal Caribbean's Website.
Weapons, illegal drugs, and other items that could interfere with the safe operation of the ship or the safe and secure environment of our guests and crew are prohibited. The following are examples of items that guests are not allowed to bring onboard. These and other similar items will be confiscated upon being found. Alcoholic beverages, illegal drugs, flammable liquids, explosives, and dangerous chemicals will not be returned..
Prohibited items: Firearms & Ammunition, including realistic replicas.
Sharp Objects, including all knives and scissors with blade length 4 inches or more.
(Note: Personal grooming items such as safety razors are allowed.)
Illegal Drugs & Substances
Candles & Incense
Coffee Makers, Clothes Irons, & Hot Plates
Baseball Bats, Hockey Sticks, Cricket Bats, Bows & Arrows
Illegal Drugs
Skateboards & Surfboards
Martial Arts Gear
Self-Defense Gear, including handcuffs, pepper spray, night sticks.
Flammable Liquids and Explosives, including lighter fluid and fireworks.
HAM Radios
Dangerous Chemicals, including bleach and paint.
Alcoholic Beverages (Note: Alcoholic beverages that are purchased in ports-of-call or from shops onboard will be stored by the ship and delivered to you on the last day of the sailing. Alcoholic beverages seized on embarkation day will not be returned.)
Take care,
Mike