I was on reflection this past December with my 4 and 6 year olds, there were only 17 kids total on the ship (it was early December, not school break). Camp at sea was open and our kids LOVED it. Most of the time there was only 4 or 5 total kids there and the counsellors were so wonderful , they all got lots of attention. We will continue to bring our kids on Celebrity, having a low ratio of kids to counsellors at camp at sea is a better feature than any rock wall, at our stage of life.