Q: Here's what I want to know about the successful bidders for concessions at Hartsfield-Jackson International Airport: What percentage of the successful bidders already have stores at the airport; and how many of the successful bidders have no experience running airport stores anywhere? -Margaret Thomson, Marietta A: Thirty-six percent of the winners already have food and beverage stores at the airport, spokesman John Kennedy told Q&A on the News in an email.