I have tried all the codes that have been on trip adviser for my dates-Sept 17 to 22 and none of them work. If it too early to get the fall codes. Every time I put a code in in says it has expired. Would really like to get a 5 * at decent rate. Have any of you had success for the month of September? Leaving on Sept 22 for Grand Canyon and will probably rent a car. Do car rentals also have promo codes? I've always used Priceline for other trips. Would the fairfield in Williams be a good choice to stay in while at Grand Canyon because the park lodges are all full?