The show is at the backside of the mall. The light poles have big numbered signs on them. Larry has usually gotten us in the area of #72, so that can be a starting point. It's in front of the Von Maur storefront.
I find it easiest to follow Ashford Dunwoody to Perimeter Center West, turn left to the first light, then left and immediate right. That leads around to where we're usually located.