I am currently staying at MCCS on MCLB Albany. Much smaller base than Camp Pendleton. No particular different protocol from anywhere else. Except you are on base, so subject to vehicle inspection and security requirements of any Marine Base. You will be required to show ID each time you go through gate, and will likely have to get a temporary pass for Camp Pen. If you carry any type weapon, you need to register it (not sure how Camp Pen and California deal with that issue). My shotgun I had to know serial, model, purchase date and list a secure method of storing. I would check the Marine Base guide for the location to be sure. also check MCCS Camp Pendleton for details.