Carnival Cruise Ships

We have been on two cruises now with Carnival and we loved them. We loved the service, food, entertainment and all the other fun stuff. We brought our kids this time around. WE ARE NEVER TO CRUISE WITHOUT THEM !!! Being 10 and 13, they had a blast in the clubs. Every night we ate dinner and they were off. Seeing them again about 1am or so. So many activities for them to do. While us adults got some R&R time. Much needed. Is their another cruise line comparable to Carnival in the kid friendly way? Just wanted to get some other oppinions. Thanks for any feedback !!!