Oklahoma Restaurant Convention & Expo Set for September 26 and 27 This annual Fall event is the largest trade show in the state of Oklahoma and the most important event for foodservice, hospitality, and tourism industry professionals, featuring hundreds of exhibits, an opening night party, the ever-popular ORA Culinary Cook-off, the exciting ORA Cocktail Shakedown and over 6,000 industry attendees. Published: 07/10/18