I've used this kind of discount in the past and while I never had an actual coupon, I emailed
Alamo about it as I wanted to make sure no coupon was needed. After receiving Alamo's response, I printed it out and put it with our vacation paperwork just in case. I was more comfortable having something in print just in case I was asked for a coupon at MCO, but nothing came up and everything worked out great. So if you're a little worried like I was, I suggest emailing Alamo so you have something just in case

.