The North American My Nintendo program has offered a new reward to celebrate Mario Day on March 10, 2020.
For 450 Platinum Points, My Nintendo members can redeem a 20% discount for the American and Canadian Nintendo Online Store. The discount applies on various officially licensed Super Mario merchandise such as plushies, bags, mugs, and more.
The coupon code expires on April 30, 2020. Visit the reward page to redeem the code.