Foodies will be disappointed with the food at 'Ohana. We sure were.
I think Sanaa would be fun. The food is good and different (Indian). There is a decent wine list with some reasonably priced South African choices. They have seating that can accommodate large groups. There is a window onto the savannah for animal viewing. And, it's convenient for your group since you are staying at AKL.
If you put aside the foodie in you, the Hoop De Doo Revue is fun for groups. Last time we went as a group, my nephew was selected to be in the show. Great fun. But -- the food is not very good so if good food is really important, skip this.
I guess just about any buffet works since there is something for everyone. Again, though, food is only fair at the buffets generally. Cape May Buffet at Beach Club is well liked by many, especially seafood lovers.
Other thoughts if good food is your main goal (and price doesn't really matter):
Il Mulino
Shula's
Citrico's