Pros
Built-in raises; clean, safe work environment; good relationships with coworkers (for the most part). Usually accommodated requests off (unless there was a holiday). Management was reasonable, not much trouble communicating, gave a lot of autonomy to the checkers and CSR's, didn't pressure me to stay exactly on schedule with breaks, let me have leeway. Enjoyable experience, if a little repetitive. Perfectly good job if you're looking for a few bucks in college, but not a career.
Cons
Inconsistent hours. Sometimes I worked opening shifts (6 AM-3 PM), sometimes closed (2 PM-11 PM), sometimes 4 hours, sometimes 8 hours, most of the time Saturday and Sunday. Also, most of my night shifts were on the weekends. I struggled quite a bit with sleep deprivation while I worked here because of the inconsistency. Advancement I've also heard is difficult, but I wasn't interested anyway. Like I said, not a career, just a job.