...i attended my first airventure, arrived early(7am), parked in the blue zone which is $10 and it's only a 2-5 minutes walk to the entrance. I was able to purchase my ticket in under a minute, not many people there when I arrived. I walked directly towards the "flight line" and reserved my spot. I posted under the "jumbo tron" near the press box but I recommend a spot somewhere far to the left of it(facing the runway) most of the AC being used for the airshow are parked on taxiway PAPA which could block your view from flybys by the performing ACs.
difficult to handhold and use a slow shutter speed to capture prop blur, I tried and these were some of results from the show!