At the Starring Rolls Bakery, you can get crossants and such. We do not like any of the counter service places at the Studios and either go to a resort (either ours or a different one) or to the Boardwalk.
this is our opinion as well. There is a dearth of good counter service at DHS, we think, particularly if you need a place indoors (there is a place down toward Rock n' Roller Coaster that has decent food, but it is outdoor seating, which when you are hot and tired does not cut it)!
We tried the ABC Commissary (is that what it is called?) and the food was universally AWFUL. But if you need air conditioning, it can come in handy for a short time for a snack or soda.