At Beach Blanket Buffet there is almost anything you could ever want for breakfast, a few examples
cold cereals, hot cereals, Mickey Waffles, pancakes, toast, french toast, eggs, bacon, sausage, fruit, and so many other things I can't seem to to remember at the moment.
You should not go away hungry.
I have never gone to breakfast in the dining rooms except debarkation morning. They too have the normal type of breakfast foods, except it is served to you by the wait staff.
Hope this helps a bit.