FAA Regulation

The aircraft’s Document of Compliance The manufacturer’s Means of Compliance. The Certificate of Aircraft Registration. 

Fly as a recreational flyer until you pass the recurrent training online with the FAA.  Continue flying as a Remote Pilot, there is a 30-day window to take the recurrent. Fly ...

Civil and public aircraft operations. Public and military operations. Civil operations. 

No, the other people in the park are not on notice.  Yes, as long as the park is not busy enough that it would be considered an open-air assembly of human beings.

Without the possibility of direct human intervention from within or on the aircraft.  For hobby and recreational use when not certificated. During search and rescue operations other than public.

Person manipulating the controls. Remote Pilot in Command (Remote PIC).   Visual observer.

Continue the mission, airplanes are not allowed to fly lower than 500 feet AGL unless around an airport. Give way and stay clear from the crop duster.   Continue the mission, ...

Turn down the intensity of the light.  Look down at your controller screen to fly the drone and find the obstacle. Turn off the strobe light.

Visual observer.  Person manipulating the controls. Remote PIC.

Flying in a prohibited area. Flying without Remote ID. Flying in class B airspace without ADSB-Out.