Talk to the park personal. I'm sure you will be responsible for the arrangements and the caterer.
Public beach. Unless you were hoping exclusivity, which I do not believe is possible, then this is no issue. Would have to pay entrance fees for each car. Shelters are also available for rental. I believe beach rules may be against an expanse of chairs, but not sure.
Yes book a spot
Believe the park under State Parks Dept management.
Get ahold of the main office or the park Police might b able ta help ya
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