Most are manned during normal hours 8am-8pm or so,shorter during the off season.In Cali,the summer season is basically,Memorial day to Labor day.
If you get in after the rangers have gone,your on the honor system.There are boxes at the enterance booth or close to the sign boards as you enter.
During the off season,you can use the boxes or there are Camp Hosts in most campgrounds.Snowbirds come out and stay the off season in some of the campgrounds.They'll have an RV parked somewhere,it will be marked on the campground map at the signboard.They can help with questions,sell firewood,generally keep an eye on the place.
California State campgrounds except cash and checks,both in person and at the machines.No ATM or credit cards.
Most of all,have a blast,your going to love it.
Last edited by Booger1; 08-17-11 at 11:39 AM.