Camp Carnival starts at age 2. I took my grandson when he was 4, and it was all I could do to get him to leave every day! Those camp counselors are fantastic with kids. I watched for a few minutes before leaving him the first day - he forgot about me in 2 seconds flat! They do so many fun activities, and I was given a pager just in case there should be a problem. None, of course, and now he says "Can we go to Camp Carney again".... every time I see him.
I think it's a wonderful way for families to enjoy cruising together. Adults get to do their own thing without worrying about the kids.