This isn't really NEW (we posted this here a while back) but DCL just put out this information: Disney Cruise Line Makes Pool Enhancements for Infant Guests The U.S. Public Health Service requires that all children be toilet trained before entering shipboard pools and spas. As a result, we are introducing a fountain play area near the Mickey Pool. This area was designed exclusively for the enjoyment of young children wearing swim diapers. Despite being separate from the swimming pool, the fountain play area meets the same stringent guidelines required of all of our pools and spas, which are monitored for cleanliness throughout the day, tested daily and inspected by independent public health officials regularly. Just FYI.