Many Las Vegas casinos are changing the rules for slot ticket redemption in a way that could hurt you if you’re not careful. And while not much feels better than winning on a slot machine after a long session, nothing would feel worse than finding out that ticket expired. Yes, expired… and with it your winnings. Traditionally, slot players have had a generous window to cash in those vouchers, called “ticket in, ticket out”, or TITO. That window ranged from of 90 to 180 days, or three to six months. And while many casinos would honor expired tickets it was…