Every cruise line publishes a banned-items list, and every sailing someone loses a perfectly good travel iron to it. This section covers the rules that matter before you zip the suitcase: what ships confiscate at embarkation, what you’re allowed to bring aboard (including the drink allowances most lines quietly permit), dress codes that still exist, and the packing strategies that make cabin life easier. All of it checked against current cruise line policies for the major lines, written plainly, and organized so you can verify your packing list in one sitting instead of digging through forum arguments.