The Bills Backers of Fenway are alive and well. We have a Facebook group (https://www.facebook.com/groups/190390600967/about/) and mailing list (BillsBackersFenway@gmail.com)
Buckets of Genny and Blue are always available, and there is a special menu during games including garbage plates and beef on weck.
It's really a great group of people, and we always have a laugh when Patriots fans walk in and are dumbfounded to see a room full of Bills fans in the heart of Boston.