Hard to give a law of averages answer, because most of it depends on how social you're able to be (assuming you're at least moderately attractive).

If you go and talk to couples the entire night and don't just sit by yourselves, the odds are pretty good. We usually meet couples that are down to play on any given night we go. (Do make sure you try to gauge interest early and move along if you're not getting it though, nothing worse than wanting to play and realizing that you wasted time with a couple that doesn't.)

But the key is that you can't self-isolate or wait for them to go to you.

15-20 isn't a large gathering, but it's enough.

Don’t go in with that mindset. Think about single dating; if a dude goes to a bar thinking “I am here to get laid,” especially if he’s never picked someone up at a bar before, he’s likely to come off pushy, desperate, or uninteresting.

If that same dude goes out to say trivia night just to have fun, the odds of him meeting someone he clicks with are higher and the odds of her (or him) wanting to come back to his place is higher.

Go there to check it out. Go there to see what it’s like to hangout with swingers. If you meet people you like and say “yeah, it’s our first time we really wanna see what it’s all about,” they may be interested and showing you.

Also...be less concerned with 10 score standards. We meet people of all different sorts that we may not have been 100% physically attracted to but then we really hit it off with their personalities and had a fabulous time with...it made us realize that, while looks play a part in what visually attracts us....it actually has very little to do with who we play with