Sometimes for whatever reason, review copies get held up at the home base before shipping. Not quite sure why that is. For instance, Dokapon Journey and The Dark Spire have both JUST been put in the mail what, a week late at this point? I called them to make sure everything was ok, and they confirmed that they have just been a little overwhelmed lately and were unable to put together all of the shipping on time.
Plus, Nintendo shouldn't be worried about my review of this game. I am an Excite Truck fanatic, so unless they really screwed the pooch, I doubt it'll be getting a low score :P.