Reporters stay behind the hedge, rain drops remain in the clouds, publicists smile even as they dig their expensively manicured fingernails into the forearms of their rivals. And the biggest rule of all, as certain as gravity pulls you down, is the one that says you never stop moving.
Don't eat your own kind isn't technically a rule of the Oscars carpet, so we've managed to compile a few of the more obvious strictures that emerged Sunday afternoon.
FOR THE RECORD: Whoops! We got our Oscar-winning penguin movies mixed up. An earlier version of this story said that the makers of "Happy Feet" brought plush penguin toys to the red carpet last year. It was the makers of "March of the Penguins" who brought the stuffed animals in 2006.