Are you kind and genuine with people, customers and co-workers alike? Can you be focused on making people feel good, even when you're having a less-than-ideal day? Are you good at connecting with people, reading faces/body language and empathizing?
Does the challenge of working efficiently and skillfully under pressure (without losing your sense of humor) interest you? This is definitely not a sit-around-drinking-coffee kind of job... you really have to be able to hustle! There's always work to do of course, but when there's a line out that door, it's game on!