I am a married male who has gone to our favorite club alone on a couple of occasions. Maybe our situation is different because she is as "into" the lifestyle as much as I am, and we typically frequent this club together and have many friends there.
Regardless, I still felt "guilty" about going even though my wife practically pushed me out the door. So, before you go, be sure of two things -- make DAMN sure she is truly OK with it, and second, make sure YOU are OK with it. I'm not sure I'll ever go alone again, to be honest. Just doesn't feel right for me. It might work for the two of you, and if so, that's great.
I would agree with the previous post that you will have a difficult time finding people willing to play with a married male who is flying solo. Right or wrong, there will likely be an almost immediate suspicion from those who do not know you - a suspicion that you may simply be a man who is stepping out for something "on the side." Of course, there may be exceptions, but that seems to be my impression of the perception of others.
I was able to get playtime as a third with a couple that we already knew and were friends with. My guess is that will likely be your best chance for "quality time" -- those who already know the two of you and know the situation.
Perhaps if your wife is truly willing to let this happen, she may be willing to meet with some of your potential playmates outside the club just so your new friends know what's going on.
It will also be vital that you be reassuring to your wife every step of the way -- talk to her before, during, and after you go out. Keep her in the loop, communicate with her a couple of times through the night. Find out if she wants you to call her before playing or would prefer not to know that it's about to happen. Remember, even if she's not going, she's still involved in this -- she's your life partner, after all. She still needs to have her say.
Good luck!