Here's how I'd do this:
Fast Food: traditional burger/chicken joints with a drive-thru (McDonalds, Chick-fil-A, etc.)
Quick Serve: tell the person at the counter what you want or really fast/extremely casual sit-down (Chipotle, Subway, Waffle House, etc.)
Sit-Down: traditional sit-down restaurant with waiters/waitress that offer appetizers, entrees and dessert (Outback, Applebees, Chilis, etc)
Miscellaneous: Pizza delivery, desserts/ice cream, donuts, coffee (Pizza Hut, Dairy Queen, Krispy Kreme, Starbucks)