Core Points - Portillo's is celebrating Italian Beef Day with a month-long event featuring exclusive offers and activities [1][10] - The celebration includes a BOGO sandwich deal for loyalty program members, a CTA Blue Line train takeover, and a nationwide scavenger hunt [2][8] Company Overview - Portillo's was founded in 1963 by Dick Portillo and has grown to over 90 restaurants across 10 states, known for its Italian beef sandwiches and other Chicago-style foods [4] - The company offers a loyalty program called Portillo's Perks, allowing members to earn rewards and access exclusive deals [5] Marketing Activities - The BOGO deal allows Portillo's Perks members to buy one regular Italian Beef sandwich and get one free throughout May [8] - The CTA Blue Line train will be wrapped in Italian Beef-themed branding from May 5 to June 1, promoting the sandwich [8] - A social scavenger hunt will take place in multiple cities, including Chicago, Dallas, and Phoenix, where fans can find swag bags containing branded merchandise and free sandwich cards [8]