Pros
A good place if you're just beginning to work. The way stores are run are really catch and go between stores, but most every store I've worked at, I've enjoyed working at. Good communications between managers and employees, problems within the crew were generally quickly fixed, and it was more than easy to take time off when you wanted it. Made a lot of good friends there, and overall, it was a pretty good job for a first time job.
Cons
You don't make a lot of substantial hours or money at the job, as typically, for the average crew member, it's minimum wage or maybe a few cents above at the most. It can be a dirty job, no matter how clean you try and make it. The customers are the biggest thing, as it's a very thankless job. Oftentimes, you get told off about things you really have no control over.