I learned a decent amount while working with Great American Restaurants, specifically in working with customers, or "guests".
Now I'm a lot more pleasant sounding over the phone. I know how to handle customers when they're upset, or have questions.
Over all, it was a wonderful learning experience.
The hardest thing about the job though was the communication within your "team" as they don't communicate very often, or when I'd try to, they never actually listened. BUT, not all locations were like this. I had helped at other GAR locations and the "teams" there were fantastic to work with and tons of fun.
What I had enjoyed most working with GAR was the fact that they took care of their employees, especially financially within the area of Northern VA.
A typical day at the location that I worked at was getting things set up within the host stand, and giving bars the TV list (sports games, what times, and teams), having headsets, setting up computers, etc. And, taking care of whoever walked in the front door, greeting them properly, and getting them seated. Not too hard.