Depends on the atmosphere you are looking for
Kona: Open Seating- you can see the lobby Food - Steak was amazing
Ohana: Is a must do for DH and myself. There is fun family entertainment: limbo,
hula lessons Food: Amazing... all you can eat.

I have never had a bad seat in the restaurant.
1900 Park: I have never been here, but I know its a character meal, buffet style.
I would go with Ohana's because I like the seating or Kona if you budget is tight.