No, Odyssey of the Seas does not have a designated "baby splash zone" or a "nappy-friendly" pool where children in swim diapers are permitted. While the ship features a fantastic Splashaway Bay aqua park with slides and water cannons, this area is strictly reserved for children who are fully potty-trained. This is due to strict U.S. Public Health (USPHS) regulations regarding water filtration and hygiene. For families with infants and toddlers (ages 6 to 36 months), Odyssey of the Seas offers the Adventure Ocean Babies program, which is a dedicated, supervised play space filled with age-appropriate toys and activities. However, if your heart is set on a Royal Caribbean ship with a specific "Baby Splash Pad" (like the ones found on Icon of the Seas or Wonder of the Seas), you should note that the Quantum Ultra Class ships, including Odyssey, were designed more for high-tech "SeaPlex" activities and bumper cars rather than infant-specific water play. Always pack a small inflatable tub if you want to give your little one some "splash time" in the privacy of your stateroom balcony or bathroom.