Here's how we started, a number of years ago. I read about a club in a nearby city and was fascinated about it. Couldn't believe that we could go and experience what was supposed to go on there. I got the courage to bring it up to my wife and she was not the least bit receptive to the idea initially. As the weekend drew near, we discussed it a few times and she reluctantly agreed to go. When at the club, we did nothing but observe. I was totally enjoying the surroundings, but my wife seemed less than pleased and was actually very critical verbally. I offered to leave a number of times, but she insisted on staying. When we finally did leave, the drive home was mostly more of the same criticism from her.
Thinking that had been our one and only experience, as the next weekend approached and we began to make plans, out of the blue, my wife suggested a return trip to the club. That visit was much more enjoyable. We had sex together in one of the semi-private rooms where others could watch in ceiling mirrors. Afterwards, although always excellent, our sex life got even better.
To make a long story short, we soon became regulars and most weeks attended all 3 nights that the club was open. As we have advanced in our experiences, my wife has been the one that has adapted most easily and has advanced most quickly in her comfort level with watching, being watched,soft and full swap.
Confusing? You bet. However, you just can't tell sometimes when entering such an alternative way of thinking and behaving. I'm certain that there are a whole host of reasons why initially, even in stable sound relationships. Partners may be confused themselves and have to work through that before they can even communicate thoroughly and effectively about it with their other half.
Excellent advice.