I know this event just ended, but I thought it might be worth posting since there are more coming.
If your local gamestop/EB doesn't offer the codes, you can call Nintendo's customer support and get a code through them. I've been hoarding codes and was able to get a couple extras through this. Don't abuse it obviously, but I saw some of you posted they didn't carry them in your area so I thought I would let you guys know.
I've missed this one if someone have a spare code please let me know
I wasn't able to get one either. =(
If anyone has 2 spare codes for me + my brother, I'd appreciate. Might be willing/able to pay too!
Man that sucks, I had no clue this was even going on! I should check this stuff more XD