Night shift absolutely sucks, and I'm deliberately lax on enforcing many of the store policies because of it. Late for your shift? If your shit gets done, I don't care. Don't like wearing the uniform? I don't either, just put your name tag on before the store opens. Forgot your lunch? Grab something from the cold case or whatever and pay for it when a checker wanders in later.

The only policies I enforce 100% are safety-related. I don't want someone cracking their head open because they were using a pallet jack as a scooter.