There is a little bit weight than usual first come first serve I suggest you get there early to get your spot.take everything you need to you might not be able to get back in.
The short answer is no. As far as I know they don't have any sort of real time wait time or anything. So get there early!
They may have a ranger there that will turn you around unless you have proof of camping reservations.
They usually put a sign or a rope across
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