Ahhh..the 3 day CA....
Usually in a High School... folding chairs in a gymnasium. We used a the little theater in a few high schools.
Friday nights to 9 pm.... so we got pulled out of school at noon and drove to the place... about 4 hours on Friday night.
The high schools we seemed to use were pretty art -deco WPA era places... usually cold in the winter or no airconditioning if you did a late spring date.
I remember watching a mouse one friday night in Covington Tn... I was sitting down front... he would scurry out from under the stage. He was pretty agitated after all ...we were on his time.
Hill