It it FREE and open to the public!
Enter the building on the east side with the flagpole (shown)
Walk up the stairs and go to the left once inside the doors
Inside there will be some glass doors, they surround the auditorium lobby
The box office will be on the right of the glass doors
Once inside the interior glass doors (auditorium lobby)
Follow the hallway down to the left
The black box is inside the double wooden doors with the windows