It's a long stretch of beach with many access points I doubt that they would be able to kick you off of it officially
The parking lot just North of the Campground Shuts down at 10-11 P.M.and has Signs will tow Vechicle left over night . I have Camped the beach Campground great time You Could Stay on Beach all Evening but think You Might Have to Prove Local Campsite in state Park # Or Hotel Residence because of the Homeless In Area attempt to Reside on the beach Sometimes and are actively Arrested for illegal Camping on the Beach or in the Parking lots of Southern California Nowdays
We walked down the stairway access to the beach around 9 to 10 pm with no issues.
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