Grand National Roadster Show?

I've talked for ages about flying out to California in January to attend the Grand National Roadster Show. Looks like a friend and I may actually go in January, 2020. For anybody that has been there, If we go on the Saturday, can you reasonably see this show in one day?

The description on their website says 500 vehicles inside the buildings, 400-800 parked outside around the buildings, and I'm sure there will be lots of automotive vendors....

Grand National Roadster Show?