I've never gotten a GAC at
DL before, only
WDW, but when you get your GAC they ask you when your last date is at the parks, do they not do that at
DL? If not, why not ask if they can stamp it for when your APs expire? If you explain the situation to them I wouldn't see why they couldn't grant that request, unless it is
DL policy. I know each park has their own policies on how they conduct business with persons with special needs (at
DL Paris my wife got in for free, as my sighted guide, and I only paid half price, PLUS their version of the GAC to boot...the amazing treatment at
DL Paris is actually what first clued me into the GAC at
WDW)
Cheers!
Tim