Red Gym Chat

I discovered this place was a thing. I'm genuinely curious and interested and wonder if someone could help answer some questions?

I would be a first timer to doing anything like this. Only had gay sex 4 times and monogamous ever since. Never did Grindr, went to an adult theatre, bathhouse, etc.

So maybe from start to finish, how does this work? You strip naked, find a guy, say "hey wanna fuck"? Just walk up to someone doing the deed and tap them out? Walk up and suck him off without a word?

I also see a lot of people saying they will be here or asking if anyone else will be. Is this place generally slow or something?

Are bigger guys generally welcome?

Thanks in advanced.