I've only been to one game, yes, one. This year was my first game. I went to Gillette and there were a lot of fellow Bills fans there. I had a great experience. The fans were great and didn't mind that I was a Bills fan. I talked to Bills fans and Pats fans alike. All were nice, friendly and pleasant. In fact, a group of pats fans (with one Bills fan in their group) next to us tailgating actually offer some food. Great tasting steak tips I must say.
I was a little apprehensive at first, but in talking with the fans there were no problems at all. And, you're right about the traffic. My group stayed in the lot late because of traffic. Ha, we actually got kicked out of the parking lot because it was closing we stayed so late after the game! It really was a great experience...would have been better with a Bills win, but the they did play one hell of a game!