Yes the dirty little secret is out, fame and medals aren't the main reason athletes want to come from around the world to the Olympic games. In every Olympic games for the last 100 years for the week leading up to the opening ceremony and for a few nights after the close, most of the athletes are engaged in a drunken orgy.
At the 2000 games in Sydney, 70,000 condoms were ordered. THEY RAN OUT and had to order 20,000 more. So if you've ever wondered why some athletes look like hell late in the Olympics, they're probably hungover, sleep deprived, and have been fucking like rabbits with complete strangers for days. Sounds like fun.
http://espn.go.com/olympics/summer/2012/story/_/id/8133052/athletes-spill-details-dirty-secrets-olympic-village-espn-magazine