Well the preordered gift is satisfied through Samsung. You just have to upload your HEX/IMEI/DEC number of the device along with the receipt etc and you should be good to go.
In my experience with Samsung freebies, it takes at least a month or two before you actually receive it.
But isn't the possibility of the pre-order items being claimed by all the early online orders gobbling them up? Since the fine print is "limited supply" and "first come first serve"