How about if I want to buy a(nother) license (or two) now at the discounted price but not download/install for some time. Tomorrow. Next month - I don't know. I assume there are no problems with this and it just sits in my licensing area as usual and can be downloaded as usual whenever.
In other words, I guess the early adopters deal is so they can get the cash in early rather than get sites out there giving them some face time.