Were there black performers at both events back then? Yes. I knew some of them well. Were they dealing with constant racist comments from customers? I didn't hear any. I suspect this cabal of plus-sized Jussies are just trying to get their fifteen minutes of fame out of an organization that has always been liberal in its views and mission. I don't support extortion but - like many liberal organizations - the Fair's promoters are in a lot of ways getting exactly what they voted for.
I went to the Renaissance Faire in the 90s. As I recall, it was right off Highway 37, between Vallejo and Highway 101. Is that the place you are referring to?