DH and I have no children. We have cruised with Disney approximately 15 times.
We are leaving on the 7th of May to get on the Disney Fantasy again, on the 9th, this time for THREE WEEKS. Yes, you all read that right. We are doing back to back to back 7 day cruises, three of them for a total of 21 glorious, fun filled, relaxing (it is possible to do that on a ship full of sugar overloaded children...hahaha), spa treatment, (Ahhhhhhhhhhhhhhhhhhh, my wonderful facials and massages....), Gastronomically delightful Palo meals and soaking in the Caribbean Sun and and the joys of satellite Falls, the Fantasy' s best kept ADULT ONLY secret. No kids are ever allowed up there for a dip in the wonderful adult water "play area".
There are so many fun adult activities and the ports are funfilled places for adults. Just think of doing some Caribbean shopping in a port without your children for a moment. The freedom of shopping at YOUR leisure, not the pace of your children. I would highly recommend an adult only cruise. You and hubby will love it so much, you may never bring the kids again after that family cruise you already have scheduled...hahaha...just kidding.
But you will find it a whole different experience without having to be responsible for your kids while you cruise and someone takes care of them for you. When you do your family cruise, you will be responsible for your kids and cannot expect the crew to watch them for you. Of course, you may never see them IF they are in the kid's clubs. I have heard kids NEVER want to leave the kid's clubs....
Go ahead, indulge, and enjoy yourselves....you will love it!!!