I have never met anyone interested in us, from (online personal sites) in the lifesyle, that I wouldn't chit chat with a little bit, in person. Especially at a meet and greet/party.
They didn't ask to have sex in the PM, it sounds like they just want to say hello.
Tell them if they do see ya, to be sure and say hello
The toes we step on today may somehow be connected to the bodies we want to lick tommorow.....