I know this have been mentioned, but my family gets to Kona Cafe each trip, at least once, for breakfast, and while dinner is not a must do there, we also try to make it there for dinner as well.
DW and I always make it to California Grill for dinner as well. This is not the best familyrestuarant (it can take 2 hours), but we love it...ok I love the sushi. I assume DW loves it as well, but the selfish jerk in me knows that he loves it.
Another favorite for us used to be Ohana for dinner, but we haven't been too keen on the menu changes. We do really like breakfast here. We aren't buffet fans, and prefer the family style meal. I think this is a great character meal. Our son is a big fan of Stitch, so that may help.