You will have to park in a parking lot and carry everything to your campsite, so I recommend bringing a wagon if you have one. There are trashcans on wheels but they are in high demand during check-in/check out.
It is about a mile walk from the ferry dock to the campsite.
Bring a bike to explore the nearby wineries.
Beware of poison oak!
Make sure all food is put away at dusk because raccoons will come to take it and they are not afraid of humans.