Yes, they do. Camp Carnival on the Destiny class and higher ships have a special kiddie pool, and an area of deck all to themselves. They have indoor playrooms too and seemed to be very content. I rarely saw kids on my recent cruise. I did see a few dads taking kids in the main pool at around 5 pm when the deck is clearing out.
Hi there, yes the Camp carnival kids program is wonderful for children of all ages. They do have a childrens pool and are taken there and watched depending on the days activities. Any other questions, please feel free to email me.