Meet weatherman John Bolaris. His story is a lot like your story. Except he went to South Beach, Florida, hooked up with two women not once but twice and was drugged--not once, but twice--and ended up getting scammed out of a lot of money.
Bolaris successfully sued and got all of the charges reversed but he ended up out of a job for excessive "showboating" which is a classy way of identifying the male activity known as "douchebaggery."
What could have saved him from all of this grief would have been a wingman. It is not clear as to whether or not he was down there with a friend or two.
Remember--when you're out with a friend, watch out for this sort of thing. The Russian mob is persistent, and they will hold impromptu auctions in order to scam you out of money. Make sure that you're preventing this from happening to a buddy wherever possible. The life you save could be your own.