I haven't had any CS that I can recommend highly at DHS. If it were me on the dining plan, I'd go over to the Boardwalk Bakery - they took the dining plan the one time we were on it. You got a nice huge sandwich (enough for 2 to share!) with a drink, a side (we got some little cucumber salad thing I think) plus a pastry! It was a lot of food, and the sandwiches are pretty good.
Or I'd take the boat all the way over to Epcot!