Probably one of the first things we hope the other couple likes is kissing. facelick
We can't imagine playing without doing it! Likes others have said: there are other things we know we do with each other that only we do. I guess it's nice that people have something special just between themselves but we feel that kissing is essential for a great swinging experience.
Now, if went to an on-premise (Or even off-premise) club we might think twice about it until we got to know the people but it doesn't take long to think twice sometimes.
Male D