I have an Alamo reservation from December 16-27 using the code below found on Mousesavers. Now when we try it again to keep checking for a lower rate it says this coupon can't be used due to conflict with blackout dates. If we end up using our original reservation will we have any problems using that coupon? Thank you! American Airlines AAdvantage members (frequent flyer program, FREE to join) can get $35 off weekly rentals of any size car in the US, Latin America or Caribbean. Go to the Alamo website and use the coupon code AD2359FDF when booking. No physical coupon required. A Saturday night keep is required. Valid on rentals through 12/31/12. Thanks to Tom for info.