Ordered tickets today. We always set up on the corkscrew hill in the shade and explore from there.
Seems the last couple of years there's been local service clubs running people up and down the hill in golf carts for a small donation. Saves some uphill walking. No one will mess with your stuff while you are out and about.
You can bring coolers with what ever you want, no glass, but no one checks.
The closer you get to Monterey watch for law enforcement, don't speed.