Best for: Families with small children
Runner-up: Carnival has teamed up with Dr. Seuss for its kids programming. Look for the Seuss-a-Palooza parade and Story Time, featuring character appearances (The Cat in the Hat, Sam I Am), and a "Green Eggs and Ham" character breakfast. The Camp Ocean facility is one of few to both accept 2-year-olds and employ counselors who will change diapers. It also has options for childcare and parent-kid playtime for babies and toddlers too young for Camp Ocean. Loads of casual dining options, water-play areas and mini-golf, and large standard cabins (as well as family-focused options on some ships) just add to the line's appeal for parents.