SE Store Keys.

[Alunari]

Gives you time to pre-bring up the SquareEnix store. Which I would highly suggest you bring yourself to the key page, because as hard as it is to get into the game, you can imagine how hard it will be to load their website when EVERYONE who bought the game off the store is doing it at the same time.

F5 Refresh is your friend.

Already poking the store, after I read Pinkie_Pie's post above, nothing there yet, but I live in hope :P