The first couple we met for swinging, we met online and made arrangements to meet them halfway (about 40 minutes or so from each of us) for dinner and then we were going to split a hotel room (first bad choice). Dinner seemed ok, but since we had already made hotel arrangements we felt a little pressured to move things along even tho we probably shouldn't have (there really wasn't that connection).
We attempted to play and both of the guys ended up having some problems getting/keeping it up. We hadn't really discussed our prefs/boundaries ahead of time and that caused some friction as well.
The next morning we basically went our separate ways... but the story does have a happy ending. A few years later we ran into this same couple via another common interest. We discovered that we'd all grown a lot and we got to be really good friends and even managed to play a few times together.