I sent in the application on ~Jan 30, finally got them late last week.
I don't need the privilege on a daily (or even weekly) basis, so this is what I did:
Put Gorilla tape on the back of the sticker protective material (you know, the stuff you're supposed to take off to expose the sticky side .. I left that on and covered it in Gorilla tape).
Then, if I need it, I use double-sided tape to stick it onto the rear flank. It sticks very well, but can also be peeled off .. off the car and off the gorilla tape. That way I retain the integrity of the sticker upon reuse. And if I really do need it permanently I can still peel it off and stick it on in the way that it's intended.