Oshkosh: Which day to skip?

I will be camping at Oshkosh for all six nights with my non-aviation
father and my 5-year-old son. We'll be taking one day off to go tour
the nearby Clydesdale farm (reservations required) and whatever other
things strike our collective fancy.

Does Airventure have a varying "character" as the week progresses?
(i.e. people packing up on Friday, maybe a slow start on Monday,
overcrowded in the middle, I dunno...) If you were to skip a day, would
you care which one it was?