Hi all, I thought I would pass this along, I recently (a couple months ago) made a week or so long reservation at a USFS campground for the Fourth of July holiday at a campground. The total reservation cost was about $70.
A couple weeks ago, I was looking into whether or not to buy the $80 America the Beautiful Pass because of a upcoming trip to a National Park. I found out that at most federal campgrounds you recieve a 50% discount with the pass on camping fees. So I bought the pass, and then I went into the reservation I had already made for July, and within the "edit reservation" feature there is a spot to enter your pass number, and viola my card was credited the $35. One reservation covered nearly half of the intitial outlay.
I was a bit surprised to find out they allowed retroactive credit on existing reservations.