Kids' club

There were about 400 kids on our cruise but you would have never realized that they were there.
There was a kids' club which looked after them during the day (can't remember if this was a paid service or included) and one of the things they learned was a performance, which they put on during the last night of the cruise in several places around the ship.
It was a good way for the parents to see some of what the kids had been getting up to during the day.