FAA Regulation

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

No higher than 200 feet. No higher than 400 feet. No higher than 300 feet.

Objects carried on the sUAS are secure.   The site supervisor has approved the flight. ATC has granted clearance.

The FAA Inspector-in-Charge. The lead visual observer. The Remote Pilot in Command.

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

ensure that the human beings who are not participating in the operation are under a covered structure or inside a non-moving vehicle. ensure the sUAS is equipped with a parachute make sure the area is closed or restricted-access.

600 feet AGL. 500 feet AGL. 400 feet AGL.

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.

you may fly your drone in the TFR since your company is sponsoring a team at the race. flying your drone is allowed if you notify all non-participating people of the closed course UA operation. the TFR applies to all ...

Remote Pilot Certificate, Registration Card, and a copy of the Completion Certificate for the Recurrent Training.  Remote Pilot Certificate and your logbook. Remote Pilot Certificate and Registration Card.