Vantaggi
Coworkers are usually fun, they're what makes the environment bearable. If you're in college/high school it's decent for extra money.
Svantaggi
If you're in it for a business administration career-type thing, wouldn't recommend it. The way management conducts things is interesting at best. Schedules, at least at the store I work at, aren't posted until the day or two days before that particular scheduled week starts, then you're given heck if there's conflicts. Typical retail cuts hours when budget is overspent, but they give out hours like hotcakes when business is good, not maintaining a proper balance of unforeseen slow days/weeks. Need to pay more attention to happenings around city and adjust accordingly. You're looked at funny if you decide to get another job to supplement that one. Oftentimes there's one person in two departments on a busy weekend, then they get yelled at when things aren't done as they should be.