Glad to hear that your first experience was a positive one, and be assured that your feelings are "normal". Just keep on believing that when we say "talk, talk and then talk about it" that we aren't kidding
. Be sure to discuss the insecurities that you are feeling with your wife, this is a normal response too. Just keep in mind that sex is fun but love is real, I'm sure that you will be just fine after a reassuring talk with her.
I would advise discussing the subject of boundaries with this group in a sober setting. It is important that everyone be aware of what is and what is not acceptable prior to a few too many drinks. Some of these people may unknowingly stretch your boundaries and in turn bruise a friendship just because they didn't know. Would any of this happened if alcohol wasn't in the mix? I understand that a couple of drinks to loosen up is no big deal but swinging while intoxicated could lead to trouble if everyone hasn't agreed to boundaries prior.
I never do anything while drinking that I wouldn't do sober, actually won't have more than a couple of drinks with swing partners just so that there is no doubt in my mind that I am still in controll. Then I won't have to worry about regrets in the morning. Just food for thought.
Annette