I know, but if I can, I'd like to avoid any possible hassles from trying to activate the Premium Edition when I already have vanilla+B2K on PC (not to mention saving a few more bucks at GameFly with the 20% off code).
EDIT: It appears that Amazon gives two keys for the Premium Edition (one for BF3, one for Premium), and I shouldn't have a problem activating just Premium if I go the Amazon route. I'm still going to wait a bit on GameFly though.