Calling All Chefs and Bartenders: Upcoming Competitions Offer Big Prizes! The Oklahoma Restaurant Association is making preparations for two popular competitions to be held during the 2017 Oklahoma Restaurant Convention & Expo on August 30 & 31. The official applications have been made available; all we need are applicants! Published: 06/29/17 Register for Certification in Hotel Administration (CHA)! OH&LA will offer Certification in Hotel Administration (CHA®). The CHA is the most prestigious certification available to hotel general managers and hospitality executives. It identifies the recipient as being part of an elite group of hospitality professionals who, by combining education and experience with dedication to the industry, have achieved a high level of expertise. Published: 06/28/17