Can anybody really get a license to sell fully automatic weapons, and then sell to "friends and family, colleagues, or interested buyers"?

You said

thus illegal to use in film

so it sounded like you were talking about a sound stage or film set.

I do not know if the law considers a theater to be a “public place” since it is private property and admittance is controlled by the owner.

We have open air free plays and shows on public parks.

Like I sai- the law specifically exempts plays, film, etc.

That is my point- someone gets ahold of some safety law or rule, and posts it- not knowing that the law or rule has specific exclusions plays and films, etc.