Generally, large inflatable pool floats (such as giant flamingos, pizza slices, or "lounge" islands) are not allowed for use in cruise ship pools. The primary reason is the limited surface area of shipboard pools; these pools are significantly smaller than land-based resort pools and are often crowded with passengers. Using a large float would create a safety hazard and block other guests from swimming. However, most cruise lines, including Disney and Norwegian, allow small, personal flotation aids for children, such as "puddle jumpers" or inflatable armbands, provided they are U.S. Coast Guard-approved. You are usually permitted to bring your own deflated floats in your luggage for use at beach ports or private islands (like Half Moon Cay or Perfect Day at CocoCay), but you should check the specific "Prohibited Items" list for your cruise line. In 2026, many lines have become stricter about "pool deck space," so it is best to assume that anything that takes up more space than a standard swimmer will be restricted by the pool attendants for the comfort and safety of all guests.