NAMES and PRIME

Is it true that NAMES and PRIME are only two day shows?
If so surely with the size and population of the US interested
parties can't get round?
In the UK where we don't have the massive distance problem we have
the four biggest shows, Wembly in Jan, Harrogate in May, Donington in
October and Pickets Lock in December all staged over a week.
Even at this they are packed out. I've seen Wembly where the queue
went nearly round the building and they were letting three or four in
as three or four left. This was peak I must admit.
I regulary attend Donington as it's only 5 miles a way from me. Not
normally a queue but still plenty of folk inside and queue around the
better tool stores.
I can't imagine any of these shows being held over a weekend period.
You would never get in.
Can anybody who attends these coment?

John S.