I read in the book:
The Guide to Midi Orchestration 3rd Edition
That you can often get into you local orchestra dress rehearsals by calling up and asking to study what they are doing for education purposes.
This worked out awesome for us because our children are home schooled and we are teaching them orchestration. So Mom and Dad get to go along.
So I called up. Presented my situation and they are getting back to me soon as to if and when I could go but they did already send me all the dates I could go.
So I am pumped!
I will keep you posted.