It really comes down to how comfortable the girl is with you. It ends up being a YMMV thing for most guys.
A lot of the girls don't stick around long enough to reach that comfort level. Then again, if you only see a girl every couple of months, that trust won't develop. But once you show the respect and dignity they deserve, and you become a "regular" it's usually a normal occurrence after that.
Hell, if you're really lucky, the kitchen mama even gets into the act. I've had a number of kitchen mamas let me in the back door, and I didn't even have to tip them extra.
Good luck!
Oh wait a minute, did you mean.........
In that case....
K.