Someone can correct me here, but I believe some options are not available at the walk up ice cream counter, I thought the No Way Jose was one of them and also the Kitchen Sink, although I feel like there may sell you the mini option of it at the walk up?
That being said and having eaten ice cream there, I agree with Pumbaa, the Fountain is real good, and no doubt the other options people are saying are for ice cream. But since its so small for seating, if you know that that is somewhere you want to have a meal, I would get an ADR.