Personally I loved Cinderella's Royal Table. My husband and I are childless, but this dining experience made us really, really wish we had a little girl or two to bring along. This experience was the one that really made me feel as though pixie dust had been sprinkled all over the place...true Disney magic.
My husband and I are going back to Disney in October, and we decided we're going to eat here again, as the atmosphere was magical and the food was surprisingly good! We thought we were just going to get a main entree and that was it, but we loved that we got to have our pictures taken with Cinderella (though again, wish we had a daughter with us).
The rice pudding was really good...if nothing else was decent about this place, I'd go back for the rice pudding alone. Delicious. We had a really fun time so I think your family will too.