The one advantage that I can think of is that all the brush clearance to make parking spaces will make it easier to find downed aircraft.
On the other hand, the downsides are considerable. The runway may or may not be damaged from parking vehicles on it. The facilities that the Valley Flyers installed with a considerable investment of both dollars and sweat are subject to vandalism. Will the show sponsor insure against losses? And if the show is successful, then we can anticipate losing flying privileges two or three times a year for extended periods.