Upon boarding the ship you'll receive information on the Camp Carnival Orientation Meeting, where you can register your children in order for them to participate in the Camp Carnival activities. If you miss the orientation meeting you can register your children 2 - 11 years at any time during the cruise at Camp Carnival. Once the children are registered with Camp Carnival they are free to participate in as many activities as they choose. Young teen 12 - 14 years old must also be signed up for Circle "C." There is a meet and greet so the teens can meet and parents can register their teens.  Club O2 teens 15 - 17 years old can just check in with the Club O2 director.