Social Nudist Groups in Las Vegas

I am interested in finding social nudist groups in Las Vegas. As a married man, who's wife is a non-nudist, I am struggling to find like-minded people or groups/clubs in my area. The only one closest to me has a strict policy of couples only; single women are oaky but no unattached males.
I'm a 70 year-old retiree that is locking for some nude social contact. Help!

Mike