Yes, clean and private showers. Deposit required for keys that is returned on departure. Watch office hours though if you depart early.
Yes, clean separate showers.You leave a key deposit with office and get refunded on check out.There are about 10 separate key entered shower/rest rooms for people to use--open 24/7.They have separate heaters for each l shower.
I have stayed at Cal Expo RV park at lead 10 times over the years---vert centrally located!
Get an answer from Cal Expo RV Park staff and past guests.