In 2026, major cruise lines like Royal Caribbean, Disney, and MSC have made their ships extremely baby-friendly, though there are strict age and hygiene rules to follow. Most ships require infants to be at least 6 months old to sail, with some transoceanic routes requiring a minimum age of 12 months. Onboard, you will find "Baby Centers" or nurseries (often for a small hourly fee) staffed by certified professionals who can watch children as young as 6 months. For 2026 travelers, many ships now offer "Baby Stages" programs where you can pre-order diapers, wipes, and organic baby food to be delivered directly to your stateroom, saving precious luggage space. However, a critical restriction remains: due to health regulations, children in nappies (including swim diapers) are generally not allowed in main swimming pools. To accommodate this, most family-oriented ships have dedicated "Splash Pads" or shallow water play areas specifically designed for toddlers in diapers. Additionally, high chairs are available in all dining rooms, and most 2026 cruise cabins can be equipped with a complimentary pack-and-play or crib upon request.