As a furry, I could probably tell you one thing that is not happening in mass at conventions and that's sex in fursuits. Not saying it hasn't happened but you're dropping almost 2k on a fursuit and any kind of strenuous activity would kill you with heat exhaustion. Not to mention ruin a 2k suit. My average time at a convention is spent hanging out with strangers that are like minded, sometimes I go into the board game room, plus there are a lot of pretty awesome panels that go on and even one that taught about bee keeping.
Otherkins. Their people who believe they have an animal spirit, or reincarnated from an animal. I would say they have some type of mental health issue or at very at least their form of escapism has gotten out of hand.
I have a work mate who is an austisic, pansexual, transgender artist who likes to draw herself as her character which is a baby wolf. What I have learnt is that her particular flavour of furry ideology is based on innocence and creativity. She's had a hard life but we accept and support her. I might interview her myself on yt.
The minute you said you were going for a UFC event and you were talking about furries I knew you were going to say you were in Pittsburgh. The 1st time I visited a guy I was dating in 2013 it was during the furry convention. He told me about it but I never saw one. Fast forward 9 years and I now live in Pittsburgh and I was out with my kids sightseeing and we saw one. My 13 year old son was shocked. Lol!