I am a platinum member on Club Nintendo, and recently Nintendo released their Elite member rewards for the year: downloadable 3DS/Wii U games. I own a physical copy of Animal Crossing: New Leaf, and that's also one of the games available for download. My Club Nintendo account is linked to my NNID which is linked to my New 3DS.
My question is: If I choose AC:NL as my reward, can I download that digital copy of the game onto another, completely separate 3DS? Is the download linked to my Club Nintendo/NNID, or is it a download code that I can use on another unlinked device?