I'm not gay, but my best friend, co-worker, and boss all are. I've never heard any of them speak of a single incidence of trouble because of it here.
Of course, we do live in downtown Madison.
My best friend and her wife had a really good experience planning a wedding in town - found a great church to do the ceremony, had a lovely reception, everything went smoothly. We didn't even have any problems when I threw them a bachelorette party, and I expected that if there was going to be any trouble, it'd be when I had them handcuffed together and bar hopping.
But, again, I can't speak to personal accounts or anything outside of Madison.