Not sure if you can get the hobbyists to follow the rules, no matter what rules there are.
A couple of days ago in Sweden, a presumed hobbyist hovered for a long time over a huge dense crowd at an exhibition gathering. Some people got scared and attempted to move out of the risk zone, although that was difficult in the dense crowd. This is highly illegal in Sweden, as most other places in the world.
I would gladly have filmed there if asked to, bun then I would have taken the Inspire with a long lens, so I could hover outside the crowd area.
Most people know the general rules, but it is probably first when you become commercial, you guard your responsibilities and rights.