Within 12 hours of arriving in Las Vegas, make sure that you head over to Vacation Village. It is located at 6711 Las Vegas Blvd South, which is the extreme southern end of the Strip, below Mandalay Bay, near the airport. Why would I want to go there, you ask? Free cash, of course! Go to the Promotions Booth, which is located directly across from the front door, and present your airline tickets to get a free spin on their big wheel. You will win $1, $2, $5, $10, $20, a free room, or half of your airline ticket money back. I guess they only want to pay your way out, not fly you round-trip, but it is one of the few "sure things" in town... just keep you fingers crossed that you don't win the free room.
If the Promotions Booth is closed, you can have a pit boss give you a voucher to come back the next day for your spin. I can't say that I would spend any time at Vacation Village otherwise, but the people were very friendly and I won $20, so I would recommend it. No coupon needed, just bring your airline ticket.