We're a happily married 30-year old couple from New York, visiting Las Vegas all week. We've done some swinging and have been in an open-relationship for a while. My wife has recently expressed an interest in acting on some bi-curiosities she has. We spent some time searching the Internet and this site in particular and there aren't too many providers explicitly talking about couples.  
 
We're thinking that a couples massage might be a good way to get started, or perhaps a low-pressure escort could ease us into things.