Orlando-area Dunkin’ and Krispy Kreme locations are celebrating National Donut Day later this week with the promise of free treats for customers. On Friday, June 2 (National Donut Day), at Dunkin’ locations around the country, customers can get a gratis classic donut with the purchase of any beverage. Not to be outdone, Krispy Kreme is offering up a free doughnut (at the drive-through or in-store) without any other purchase required.