RE: Question regarding AMA and full scale.
In some areas such as Anne Arundel County, Maryland, the problem is that the local zoning prohibits landing or taking off an aircraft at any place other than a "designated" airport or heliport.
If you violate a rule/regulation (it doesn't matter who's), you may be creating an "unsafe operation".
We could lose our field if we (the club) allow an unsafe or "illegal" activity.