Pros
At the station I worked at, the employees as well as the manager were very close knit & friendly. The job is not one of hard manual labor, and of course doesn't require much hard thinking.
Cons
As you can expect from a gas station job, the work station is pretty filthy. The overwhelming majority of the work is trying to keep up with the store's cleanliness. For whatever reason, gas stations seem to attract grime and gunk, and you never seem to get ahead of it. The worst part in my opinion, however, was the ugly amount of bureaucracy. There's always some corporate man in sunglasses lurching over your shoulder, judging your job. Because of this extra amount of stress, the job is a total revolving door, where almost nobody seems to last a year without quitting. That certainly was the case for me.