I will travel from los angeles to las vegas, I must arrive around 11:30 pm, can I enter the RV parking?

Also Mt pass too. 4000' + Stop at Mad Greek, Baker 😍CA Bad drive from L A.. speedsters! Dark!

Yeah, note on door states after hours check in can contact the main registration to register for the rv park. Dont recall if there was a phone number or not.

You can check in at any time with a reservation.

Not too sure.Contact them to find out