My three would be:
1. Margaritaville.
2. Hard Rock Cafe.
3. Bubba Gump's.
My wife and I have done Pastamore' twice now and weren't impressed with the food either time, although the service was good. We've done NBA City once, and the food and service were fine, but we prefer the three restaurants listed above over it. The only other Citywalk restaurant that we've dined at is Emeril's which we liked. As it has a different dining atmosphere as the other Citywalk restaurants (dress code, reservations, mucho dinero), so I left it off the list.
As you will be staying at the HRH, try eating one dinner at the Kitchen. We dined there on a Sunday night, a couple weeks ago. The food and service was good. The prices were comparable to the Citywalk restaurants. There was no wait to be seated as well.