You'll have to get to the stadium about 6 hours early, but for the true Bills tailgating experience, you can't beat Hammers Lot. It's basically across the street from the stadium, right next to the new stadium. I think it's $60 to park. Pinto Ron has his ketchup and mustard ceremony there. Bowling ball shots. (I won't tell if you let your 19 yr old have a bowling ball shot.) That would be my suggestion. You would have to take the 219 to 20A, head west towards the stadium, then make a right on Abbott and Hammers Lot will be on your left.