Disclaimer: asked on Travel SE https://travel.stackexchange.com/q/154682/13746 but was closed.
There's a theory that restaurants have a section for good looking people and a section for ugly people.
Fox News has an article: Restaurants hide ugly patrons in the back, social experiment finds.
The Straight Dope has a forum post: Do restaurants try to "hide" ugly or unattractive customers?
I wouldn't really hold my breath over what Fox News and a random forum online has to say, though. Is there any merit to these claims of ugly sections in restaurants?