According to the FAQ page on Carnival's website:
"Sign In/Out Policy: Toddlers (2-5) and Juniors (6-8) must be signed in at ALL times. The same parent that signs them in must also sign them out. While most of the activities for the Intermediates (9-11) are supervised, there are times when they are divided into small groups for scavenger hunts and are not accompanied by a counselor. The children may attend whichever activities they choose and are free to come and go as they please unless otherwise requested by the child's parent or guardian with the Youth Staff on duty. "
We have a 5 & 9 year old that will be on that cruise - both boys. We have purchased a set of 2 way radios for the 9 year old, it's just like the regular radio's, but it's a watch. That way he'll be less likely to loose it. The 5 year old will be more supervised at the camp carnival if he chooses to stay there. In that case, we'll have their pager or he'll be with us at all times.