I find that not treating them like service staff works wonders. I think that's part of the $20 and name tricks, it relaxes you into a state of sublime confidenc

I find that not treating them like service staff works wonders. I think that's part of the $20 and name tricks, it relaxes you into a state of sublime confidence. You begin talking to people as if you know them. This faux-familiarity makes them start treating you like they actually do know and like you. And no one wants to deny a favor to a friend.