YOU MUST BUY A PARK PASS! There is a small sign posted saying park passes are required. We assumed there would be a ranger station in the park selling these $6 passes. There was not. So we parked . . . and got a $74 dollar ticket. Husker Marina sells passes (which they neglected to mention when they rented us a boat). I am not sure where else to get them, because no info was posted anywhere. UPDATED: You can pay online and print a pass in advance on OutdoorNebraska.gov