Lunch at the Plaza is great and I just love their shakes! If you like italian food Tony's is nice as well but a trip never goes by without at least a couple of visits to Cosmic Ray's, their burgers are great!!
I have never been bowled over by any of the TS offerings at MK. So if you were me, and depending where you were in MK when the lunch time munchies hit, I would either go for Columbia Harbor House or Pinocchio Village Haus.
I had a terrific lunch one day at Columbia House, the bowl of soup and half sandwich and it was delicious!! I got the clam chowder with a half a tuna sandwich and it was very filling and held me for quite a bit under dinner time.