March 31 is the last day to earn coins at Club Nintendo. Put those pins in from your physical copies! I've got over 1600 coins and I know someone else out there does too.

Also, March 31 is the last day to exchange points for eShop codes from the Wii U Digital Deluxe Promotion. I was surprised to find I had $10 worth of eShop money here. Go forth and redeem stuff.