On the day, you can stop by a participating non-mall location to get a free small vanilla soft-serve cone (no purchase necessary) or stop by a participating mall location to get a free small vanilla soft-serve cone with any purchase.
Additionally, a "Dip It for Kids" promotion will be held in conjunction with Free Cone Day on March 20. Participating locations will ask if you want to dip your free cone for a dollar extra with each dollar raised going to the local Children's Miracle Network Hospital.
Photo via Dairy Queen.