Towels gave me jock itch! In my case what happens in vegas definitely did not stay in vegas. I've been limping around for a week since staying at the MGM. Research jock itch, it's a fungus that you can get from poorly washed towels. Thanks MGM!
Also housekeeping did not entirely clean my room and if you try to put personal items in the fridge they will charge you $50. There's a big sign above it indicating this.