I've been to Bills' roadies in Atlanta, Charlotte and Denver, fully decked in Bills gear. Never experienced or witnessed an ounce of bad behavior. I even wore my foam wing hat in Charlotte. People were just confused, some thought it was a Cheeto.
I'll be honest, I kind of don't like the dark, negative vibe in the stands for the Pats games. Yes, I have seen atrocious behavior by a few Pats fans, but way more by some of Buffalo's finest boozebags.
I've said this before, and 22-year old me wants to throat-punch 36-year old me for saying it, but if we do end up with a new stadium, AND the tailgating gets dialed back from 11 to about 9.5, AND some of the worst drunken idiots get priced out, I'm OK with that.
EDIT: And I should add, I make no judgements toward those who imbibe responsibly. I'm Irish; I'm wired for drinking. I just know how to handle myself.