I spent the night in the ATL domestic crew room the other night on my commute home. You would not believe the parade of people that go through that room at all hours of the night. It is used as a short cut by the ground guys as the back door goes directly outside to some idling age equipment. FA slept there also, but she had the courtesy to ask permission.
NY is just as bad, all manner of people utilizing the room. Mos of the chairs are filled it FAs every night. I sorta understand as their room is outside security in the basement.
NY has one thing on ATL though, our TV is much better!