Pros
It is a job. Cool environment, especially if you are into guitars, but otherwise there's nothing to write home about.
Cons
Severely underpaid for the amount of work expected of you. Minimum wage for basic operations associate, plus training, plus accounting is not enough pay. Managers will not schedule you for full time hours (thus benefits), but will demand halfway through your shift that you stay past your scheduled time. TONS of casual racism in certain areas, as well as management bullying employees into completing impossible tasks in impossible time frames. Schedules will change from day to day, so don't expect to be able to have any kind of out of work life, your schedule may say your off on sunday until saturday night when it changes suddenly, and you're expected to come in at 6 am on sunday.