DoubleTree by Hilton is giving away its famous chocolate chip cookies to anyone, not just guests, at all U.S. locations to celebrate National Chocolate Chip Cookie Day. The cookies, a symbol of the brand's warm hospitality, are now available in allergy-friendly versions as well. View From The Wing adds that this sweet deal is a limited-time offer, so cookie enthusiasts should hurry to grab their free treat before the promotion ends in a week.