done it a few times, wear several layers of clothes.
Playing during the winter is a pain, literally, the pellets become hard and dont always burst.
Also if you can lay your hands on the stuff divers use to stop there masks steaming up, get it and don't tell anyone. If you can see and they can't its so much easier to get the feckers.
Finnally have fun, you'll come away wondering how you have managed to get through life without doing it up till now.