Yes. no proceedure
Yes you can have a birthday party there honey. I don't think you have to call either just like they said get there early and save your spot.
Yes you can have birthday parties. It's mainly first-come, first-serve, but you can call the city of Moorpark to double-check. But like mentioned by others, it's not usually super crowded (outside of Saturday sporting events).
In sure you can it's a very big park. I didn't think you have to worry about procedure just get there early too save your spot. It was never busy when I was there but just in case.
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