Pros
Very little down time, so your shift goes quickly. There is always something new to learn, because it is rare that two transactions are ever the same.
Cons
Middle management is totally out of the loop with what REALLY is going on in the stores because they always give a head's up when they are visiting, so GMs scramble to make sure everything seems fabulous, when in fact, the place is usually a train wreck. The lack of set schedules for employees makes having a life outside of the store almost impossible, and expecting everyone to be available 24/7, even when hired part time is ridiculous. Entry level employees are treated as expendable, and the amount of training for a new hire is daunting and tends to make people simply walk away before even really starting their job. For those who do work hard, you're going to work even harder and then when you ask for help or speak up, you get disrespected and treated as if you are expendable.