T Maki wrote in
:

If the group is choral and orchestral, be prepared to deal
with house sound systems that are optimized for Chinese
opera-type programs, and for the Chinese ear.

The group will be about 60-80 members of a 100 piece orchestra (depending
on who can come). They need little or no support from house sound. I
typically set up mic stands on stage or in the audience first few rows.

Is there anything comparable to the American union setup, where I can't set
up or use my own gear in some halls?