Lawson Hill - rooftop tent on the car?

I have a rooftop tent on my Subaru. Can I park my car for the duration (no coming/going) in lieu of my ground tent and car parked off-site somewhere?

You won’t be able to sleep in your rooftop tent unless you have a vehicle pass to one of the campgrounds. Also, Lawson camping is just a sports field. You won’t be able to drive your car to your campsite. No vehicles are allowed on the field. You will unload and carry your stuff to your campsite and then go park.

You could park your car in dispersed camping outside of town and use your rooftop tent, but ypu would need a way to get back and forth to your campsite.