I guess I got lucky then - one of my FCmates let us know preorders were live so I was able to snag mine during a Prae cutscene, but I had to wait in the queue to get the preorder key and to let them Debit me Now.

At least the store had specific buttons to buy the “right” combo - I just pushed the “Windows CE + CE Box” button. A bit confusing since I heard both “The CE box comes with a Windows code” and that the CE Box didn’t come with a code…