Ahoy, Brandy!
I'm so happy to hear you're planning to take advantage of the incredible
Youth Clubs on the
Disney Fantasy. The Oceaneer Club and Oceaneer Lab are amazing areas with tons to do, and lots of fun activities to enjoy! The Youth Counselors do a great job keeping kids engaged and involved during their time in the club.
While they don't physically "split" the children into groups according to age, activities in the clubs are recommended for certain age ranges. Participation is based on a child's interest level and maturity. Your kids will be able to pick and choose which activities appeal to them, and your four-year-old will probably not choose to participate in activities beyond his interest level.
I encourage you to visit the club on your first afternoon aboard, during Open House hours, where you can get an overview of all the awesome activities and adventures your kids will have access to during your sailing. Each day, you'll receive a daily schedule, called a Personal Navigator. In your Navigator, you'll find a listing of each day's activities in the club. We usually go over the next day's plans each night before bed, marking favorites with a highlighter so we won't miss any of the fun!
I hope this helps answer your question. Have a magical day! - Diane