Just playing around tonight, and found that the Aria in Las Vegas has a rate of $29/night for Aug 30 – Sep 2. This includes a $125 food/beverage credit. Now, if you book on Orbitz using the promo code MASTERCARD150 through their hotel+flight option, leaving from Chicago Aug 30 – Sep 2, your final price will come to $38 for the three nights. You enter the promo code at the end, under the heading “how would you like to pay?” You don’t need to fly the flights (though it’s that much better if from Chicago!). Can include flight from whatever city you want, but you’ll pay for it.