Alamo Rent-a-Car Save 20%!
Use your mastercard and receive up to 20% off an Alamo rental! I think you also get a free coupon for either one free day coupon on a 5 day rental or one free upgrade.
Go to http://www.alamo.com or 1-800-GO-ALAMO
For the 20% discount use code: 7012032
For the one free day coupon use: AF2
For the free upgrade coupon use: AU3