Joe answered the food well, at breakfast, they also have a menu so you do not have to get the buffet, I think the characters are there on Sunday (I think each resort has them on different days). But for breakfast, yes the grab and go or we often go to one of the places inside the front part of each park, can often get muffins or an egg in a croissant. I think you can usually find garbage like Pop Tarts or something in the gift shops.
We are lucky as FL RES AP's as we can go during off times and tend to get an AP discount or a FL RES one, also, I think the rates drop if you stay three or more nights. But the Express thing (I hate the parking $$ when staying on site, so that must be considered, but this is the 1st HHN I went to where the parking rates did not go up right before...of course I left the day the turned the tolls back on ;-)
Anyway, it kills me a bit when I see a family in line to buy Express. We are a family of 3, if we stayed one night deluxe, we get unlimited two park Express for two days (check in day and checkout day) for three, so even if I value that at $50, we get $300 worth of Express (which I do not think I ever paid that much for a non club room night).