High stress, low pay, minimal training that changes with each surprise task thrown your way. Bullying from the Account Manager and her hench-girl straight out of Mean Girls.
Watch your paychecks-they'll be wrong and good luck getting that corrected!
Expect calls just before you leave your shift to stay longer as somebody quit again/didn't show for a shift; days off will be interrupted repeatedly with pleas to fill in. (Not that you'll get acknowledged or rewarded for your sacrifice.)