Yeah last time I flew at an NT property I got asked to stop by one of the volunteers, so I went back to the car and dragged out my non-powered glider, amazingly the guy actually knew the regs and left me alone after that, yet both had cameras on, it was the noise that they object to.
Funny thing I saw on YouTube last week was a guy (maybe he is a member here?) who did some flights over NT and EH properties but because he took off from public property and stayed 50 meters above them out of hours, he complied perfectly with the law / ANA, and these new laws coming in end of next month actually make it easier for us hobbiests to fly over private property which is hilarious since they were supposed to tighten up the regs haha.