Last year (not this year) I have an ATC friend (who retired this year) that worked most recent Oshkosh's. That time he invited us out to Fisk (arrival point) to watch the goings on from their prospective.Most pilots did know what was going on and had obviously read the NOTAM, but a large number obviously had not. In the several hours I was there I saw some real bone-headed stunts pulled. That was the year two spun in on arrival.
I left thinking "there's no way I will fly in to here!". Since then I've changed my mind but will pick a slower time.
Dave Hamblin
(formerly DaveH on old site!)