I think that MGM is pretty lean on breakfast choices, but the Starring Rolls bakery has some excellent selections. On one trip, we hit MGM early. DH took DD on the line for Bear (before it was Playhouse Disney). Well, by the time I got off of TOT, they were in the show and it had filled. So I walked over the bakery and was pleasently surprised. The selection was smaller than the Main Street Bakery, but they still had a lot of stuff. They have some tabes and there are benches not that fat away to sit if the tables are filled.
One of the things that I can't comprehend is why there are so few fast food breakfasts in the parks. I know they want to get people into the character breakfasts, and we do them too, but if you don't eat at the hotel, you are limited.