I don't know about people shopping at 5am, we got there about 5:45 and started setting up, started selling as soon as it was light enough and the birds were set up properly.
as far as never selling or buying from a swap, you have to choose your battles. Leigh and I did ALL the handling of birds, keeping kids fingers out of the cages, etc. Leigh sold everyone she brought with her, I sold all but about half of the youngest (under 10 days old) SFH chicks and one slightly older chick.
broodies were my solution to keeping youngsters warm if necessary, though it did warm up enough that I was able to put some younger babies in the cages for a while to make them visible.
it was great seeing everyone who stopped by, sorry I didn't find others (tho I did look for you!)
I limited myself to bringing home only 4 new birds. all youngsters. one crested sfh cockerel from Marcia and 3 blrw pullets from another breeder (don't remember their name). and as much as I trust the quality of Marcia's birds, I can't guarantee that they might not have picked up something while at Gilmanor, so they will be going in my new quarantine pen down the hill for a month. it's far enough away from the other chickens that even the free rangers don't wander down there, secure against predators, and my feed/water system is self-sustaining for at least a week at a time, so they will be essentially hands-off during quarantine. and I have one extra blrw cockerel about the same age who will be joining them in 2 weeks to verify they're not asymptomatic carriers of anything.
fwiw, I thought the turnout was pretty good. sales were decent too. the only issue I had was with someone's loose dog peeing on my stuff. but that was taken care of as well.