Thanks for the warning there. I'll be at the Venetian in two and a half weeks, and while I don't do slot machines (I'm strictly a blackjack and poker player) I'll be on the watch for folks. Normally I work things with my girlfriend where she'll have a zippered and locked purse with her, and if I cash out will have her holding the money for me until we get to the room.
At least the Venetian got things straight for you quickly enough...