Pros
People who didn't quit or steal stock while working decent hours were likely to be offered a promotion to manager. Pay for that wasn't much better than standard part-time work, but it offered additional guaranteed hours. You get a small discount on store products.
Cons
Frequently understaffed with an extremely high turnover rate. Those who stuck around for any length of time were likely to be stuck managing the cash register, as the new employees were not trained effectively in its operation. Teaching them the correct locations of items needing to be restocked seemed to also not be a priority. Requiring involvement from managers on specific register functions, such as giving refunds, meant that during times when they were unavailable the line could be held up drastically. Cashiers were required to greet every incoming customer, regardless of how busy the register was, or else face reprimands.