Yes. The U.S. Public Health Service requires that only children who are toilet trained are permitted to enter swimming pools and spas aboard cruise ships.

Even if your child isn’t toilet trained, he or she is welcome to enjoy the water play areas on board each ship while wearing a swim diaper. These areas include Nemo’s Reef on the Disney Dream and Disney Fantasy, Nephews’ Splash Zone aboard the Disney Magic and Dory's Reef aboard the Disney Wonder.

Please note: swim diapers are not permitted in hot tubs, spas or any Disney Cruise Line pools or waterslides, including the AquaDuck, AquaDunk and AquaLab.