Were you using the vouchers for tickets or Fastpasses? I've been hearing more that they are using a finger scan to tie the GAD tickets to the people right away...I haven't heard it for the Fastpasses yet (they just scan the tickets to insure they have a valid day to be used).
They may have changed things though...
We were doing three different things - cashing one voucher for the FP cards, cashing in two vouchers and upgrading those to multiday tickets, and cashing two vouchers in for one day tickets. Confusing I know! The CM didn't seem to having any problems with all though and we did everything at the window. He did make each of us use the finger scan thing. Now that I think about it, I not sure why I had to because it was my multiday ticket that we used for the FP vouchers. We did have to each do the finger scan though - I remember that clearly because I had to round everyone up after shooing them away! I ended up using my DH's ticket (No flames please!) who wasn't going in the park and using my voucher for the FP cards. This was not a problem because they were not using the finger scan at the gate. We did give away DH's FP card to a mother and 2 kids so they could get a set of Donald and Daisy FPs.