Other Car Rental Programs/Partners (ie. Alamo, Enterprise, Sixt) - Coupon validity?

Hi,

I was looking for Alamo coupons and found this:

http://www.americancasinoguide.com/Travel/alamo.shtml

Will Alamo have any problem with the coupons being presented just printed out? And does anyone know whether the coupon would be valid if the booking was made through an intermediary?

At the very least, hopefully I found something useful for someone ;)

Thanks...

:D Thanks a bunch! I've been looking for a code that would work in Cancun in Oct. and the 15% off code (BY 641394) is the 1st one I've got to work! ^ I just entered the info on the Alamo web site and got a confirmation #. I've never been asked to provide the actual coupon once the computer generated the reservation.