Register at the Visitors tent, connect with others (board of phone numbers) and you get an invitation to their free dinner at the Nature Center Pavilion, probably Thursday evening. The International Aerobatic Club has a dinner in a marquee near that pavilion one evening too. Hilton Garden Inn adjacent to the airfield is where many of the airshow performers stay - there'll be a gathering of aussies there for dinner on the Thursday at 7 pm - RSVP via the Facebook group. 2018 was my last trip (had booked for 2020 ...). I rarely have a need to look for a restaurant during my week there.