If you like straightforward nigiri, I'm pretty sure Kimonos is gonna be one of your favorite places in WallyWorld. The quality is there, and the prices are not crazy at ALL.
The diner ice cream place, "The Fountain" is solid, but honestly, their sandwiches are a tad overpriced. Also, it's kind of a weird setup. It's not a fully "enclosed" restaurant. By that, I mean some of the walls are short, so it's kinda like eating at an airport restaurant where people are walking in the walkways next to the restaurants "walls" with rolling luggage and stuff like that. Knowing what I know, my plan of attack if you want the ice cream concoctions at Fountain, would be to have one the awesome hot subs at "Fuel," if they still have them. (They are really, really good, and they had a few large, tall, long wooden tables to eat your food at last time I was there.) I'd grab a sandwich at Fuel, then go to The Fountain for a fancy schmancy sundae or other ice cream treat.