Raise a glass to free food on this Cinco de Mayo. Millions will be celebrating the Mexican army’s 1862 victory over France. While many admit they don’t really know the history, they do know it’s a day for deals. Chipotle is offering free delivery, Del Taco has a buy-one-get-one-free, Chili’s has five-dollar drinks, and Qdoba is giving away free guac. Cinco de Mayo is not to be confused with Mexico’s Independence Day on September 16th.