A real booth is definitely ideal to work in with paint .
I called many shops locally and they all said they would not rent out because of insurance and liability. They would be responsible if I shot paint that was not compliant with local requirements and their insurance did not cover non employees.
The only option that I found was a local Junior College that had an auto repair course. I would have had to completed the first class before I could enroll in the 2nd class to actually paint.