Use your mastercard to book a 2 night weekend hotel stay with Priority Club and you are eligible for a $50 mail in rebate. You need to register between now and 9/1/13 and stay between May 31st and September 1st. You need to register before booking. Valid at InterContinental, Crowne Plaza, Hotel Indigo, Holiday Inn, Holiday Inn Express, Holiday Inn Club Vacations, Holiday Inn Resorts, Staybridge Suites and Candlewood Suites. You must be a resident of the US or Canada
Details here: http://www.ihg.com/hotels/us/en/global/offers/offers/get50?cm_mmc=IMMerch-_-6C2_US_en-_-get50-_-vanity_businesspay
There is some fine print with this so please read the details carefully.