My Two Cents

All I can really say is a cliché piece of advice: "A person who is nice to you but rude to the waiter, is not a nice person."

And you know, it's not only wait staff... it can really be to anyone. If you can justify someone's bad behaviour then you are condoning it. Personal slights are not forgotten easily, first impressions last forever, and what is the bahaviour telling you about the value that person has placed on you and the people you associate with. I gotta tell ya....it doesn't look good!