You don't. Its mostly a disc golf an skateboard park.
You need to contact the Arvada parks department. I believe you can rent the pavilion but I don’t think that you can rent the disc golf course.
https://arvada.org/explore/open-space-nature/pavilion-rentals-in-arvada
Its a public park. As such, it is open to everyone. If you're looking for exclusive access, I'd talk to the city of Arvada.
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