Not in order of importance!
1) No talking about other games/movies etc. Its okay when the DM is tied up withone person but when several players are involved its time to pay attention.
2) Its the Dm's house treat it with respect. Even more importantly treat the DM's wife's house with respect. She doesn't game but still puts up with a weekly group of bozos coming over. She often cleans up and makes tea for the Bozos so they had better clean up after themselves.
3) if you can't come or are going to be fairly late (15 minutes or more) You call or let the Dm know ahead. Its that simple.
4) Keep the noise down after 8-9pm. DM's wife and daughter trying to sleep.
5) If you smoke outside (which most players do) Throw your butts somewhere other than right in front of the door or parking spaces.
6) Dice rolling rules. Roll where someone can see them and if the dice falls off the surface more than 1 its a failure. I hate waiting 5 minutes for someone to roll a dice that keeps flying across the room.
7) Don't use up all the ice/tea without giving warning to the Dm he'll make more and gets pissy when he doesn't have something to drink. (Dm usually makes 2-3 gallons pregame to share)
8) The DM knows its "just a game" but if your there to Play. PLAY! Not Bs around and take forever to look up crap etc. be prepared. The Dm expects the players to make some effort to prepare for a session not spend all night deciding how to spend booty.
9) Respect is paramount between DM and players , Players and players. We are mostly friends first, gamers second. But just cause its a game doesn't mean respect goes out the door.
Sounds like a lot of nit picky rules but they are mostly common sense, which is not as common as one would think.
Later