I didn't read any of the above posts, but I ran a 24 hour fitness before I opened my gym. The graveyard shift was 10pm-6am or some locations 11pm-7am.. The closing shift at the end of the night (10pm) will drop all cash in a dropsafe and the register will not open again until the morning receptionist opens the cash drawer. They can't sell any retail, drinks or day passes during the graveyard shift. The company hires "shoppers" to make sure graveyard employees don't sell day passes, then pocket the money. No way the 24 hour employees will take a chance that the guest might be a shopper hired by the company.