Just the parking fee at the park. The disc golf is free once you're in the park.
I believe the parking fee is $10 and tent camping was $15 per night (which includes parking), so it's very reasonable.
As was said, disc golf is free after paying parking fee. There is a discounted senior parking rate and parking is included if you are camping there. Loved staying in the yurts for the weekend and having after-hours access.
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