[Rick Lee]

It's probably the same everywhere in the US, but in AZ a property owner or manager can ask anyone (even a paying customer) to leave and doesn't have to give a reason. If you're asked to leave and refuse, that's trespassing. If they call the cops, the cops might give you one more shot to leave on your own, but they don't have to. If they tell you to leave and you refuse, you are 100% getting a trespassing cite. I don't recall seeing these signs back east, but out west a lot of businesses have signs by the door that read, "We reserve the right to refuse service to anyone." I know that doesn't really have the force of law or mean that they can deny service on the basis of a protected class. But everyone should know what constitutes trespassing and not be surprised when the cops enforce it.