I would have been disappointed to if I didn't see an atheist booth at pride event. I don't know why there are not more gay atheists in the world. Since, the religious, close minded fools frown on us so much. The constitution applies to us as well. All people are created equal no matter what sex they prefer.
If decide to lead on that front, others will follow.
Not sure these booths are around much anywhere. Years back there used to be an Atheist/Agnostic booth at the Wisconsin State Fair. I did not go for quite a few years but the last few years I have but did not see any booth. Not sure who sponsors them or volunteers to man them.