Replying to Sexual Discrimination (against men) Lawyers please advise

So recently I had a buddy ask me what I was doing for memorial day.  He suggested that we go to vegas since his parents own a place there.  Unfortunately I had something come up and was un able to attend.  I noticed on the event detail page on facebook that a couple of the girls were planning on going to deadmau5 who happens to be playing at the wynn.  Here is the link for tickets: http://signuptoday.org/residency/wynn-encore/xs-the-nightclub/mdw2012/deadmau5-may-27th-mdw2012.html

If you notice the prices you'll obviously see a very large difference in price of the male ticket vs the female ticket.  Now I'm going to Sasquatch music festival in Washington and seeing a way better slew of artists than deadmau5 so it doesn't really bother me.  BUT, I have had experience with this living in a large city and having some girls that I hang out with want to go to clubs where the bouncers require more for guys and less for girls.  It's kinda funny because the places or rather clubs that DO do this are the clubs I rarely visit.

Let me know your thoughts.  I'm guessing if someone really wanted to push this into a law suit they most certainly could.