I agree - we LOVE Earl of Sandwich! The food is yummy. Lines can be long during peak times, but it sounds like you are planning to arrive at an "off" time, so you should be fine. This is more of a casual lunch or quick bite type location. You will like it, but as a previous poster said, there is not any Disney Magic associated. Last March when we were there at lunch, there were locals there who came to eat lunch on their lunch breaks.
Anyway, if you want to sit down and eat a more elegant or civilized meal - as that question here so you get other options, too.
ENJOY!