Did 3 SEMA'S and 2 CES's and as a member of the working press had much better facilities and refreshments. That said my feet always hurt just thinking about 1.5-2.5 million feet of exhibition space.
For the attendees the concession rip off prices are on par with airports, stadiums, Las Vegas Strip and other convention centers.
Being a Union hall it is very expensive venue for exhibitors.
On a scale it's about equal to Javits in NYC.