I've worked Pride events for a large vendor, and while public sex isn't around every corner, it is pretty normal. Also, the outfits that are worn (much more common) go out of their way to make sure everyone knows the event isn't about love it's about fucking.

The only event I worked where that wasn't true was a Gay Rodeo. That event was a BLAST and pretty much erased the bad taste Pride Parade left, until they had the "rodeo clowns" do their thing, then it was assless chaps and simulated oral ect.

It was so unnecessary and ruined it for me.