Yeah, earlier is better from a clean air perspective both RF and usually wind wise. It's also free for all time at your own risk FPVing from any part of the field before the FPV area and center stage are active. Looks like you weren't too far from where I was camping. in past years, they had FPV areas at both ends of the field with channel coordination and an understanding that people would not cross the mid point of the field and stomp on the other end. I found the best time to fly was early in the morning before people were up moving about. I had a ground station with diversity and a good directional antenna which recorded this, but the antenna on my headset picked up a kid plugging in his tiny whoop mid flight.
I have since switched to use an extension from my ground station to my goggles. Also have some 1.3ghz gear and night cameras which I thought about pulling out this year, but in the end, I left all the FPV gear in the truck this year.
I had an arched gate in my truck that I never got out this year. It does not do well in all but the calmest of conditions.
Cheers!
LitterBug
FTCA id 26