Oh Christmas. I know I should be happy, but for some reason, I find the whole thing depressing. For this reason I decided to come up with a Survival Guide.
First I think it is important to be prepared for every eventuality, so you should have a good kit bag. Try to have everything you might need including a first aid kit. In addition to your supplies, I would suggest some reading material, pen and paper and perhaps a palmtop computer.
The most important thing is to be comfortable. Try to put yourself into a zen state by focusing on relaxation. Pretend you are watching a film. As the observer, keep your interactions short and polite. You wont believe how ridiculous people are. It can actually be quite fun.
Sit, watch TV, read and chat a bit. Before you know it, you will be driving home.