I've used several of the special codes I see on this forum to try and get a great rate on a car for my trip to ORD in a couple days. With tax added, I can't get the rate below $320 for three days. (arriving March 18th around noon and turning the car in at noon or earlier on March 21st) I belong to AAA and Costco. Can anyone help me find a better rate (the smallest size car is fine) for these dates? Thank you so much. Gail