For something beyond the girlie shows but view-only (not Red Rooster or Couples Oasis level), I have always found Vegas to be more of a private show kind of town vs. what one might find in Amsterdam (similar to what baccarat_king mentioned/offered for back east). I hear most of the strip clubs are not even full nude. But if you walk around the major casinos at 1 in the morning, there are all these nice girls sitting at bars or slot machines talking on cellphones. From a distance they will look occupied, but when you walk by they will look up, stop talking, and smile. I am sure any one of them can arrange a little show, either by themselves or with friends just a phone call away!

Seeing all the pros around is an interesting thing to watch regardless of why you are in town. I probably traveled to Vegas 15 times for business or with my wife and never noticed how available adult services are. Visited as part of a road rally a couple years ago (hanging with many high wealth individuals) and saw a whole other side of Vegas - really opened my eyes!