I'd do inventory, take orders, serve drinks and food and assisted in keeping the cleanliness mandate up to standard.
What I learned most was probably how to work with other people in small quarters.
The management was consistent. The location was well-run and I saw them as being generally fair to its staff.
Workplace culture was pretty easy-going. It tended to be dependent on who your co-workers were each shift, but I found it fairly relaxed while still being organized.
Remaining patient and I guess polite when clients were being rude or rushing you when the place was slammed could be challenging. The management had some policies that we had to adhere to and I certainly understand that, but it wasn't always easy. Especially in the morning before some of our clients had had their first cup of coffee - definite grumpiness.
On the other hand, after the morning rush, people were generally friendly and you'd get to know a lot of the customers. I can still recite some of their regular orders if I think about it. Some of the banter would make my day, I really enjoyed it.