OP, there aren't any tricks for the breakdown carts for the mall. Use totes for your smalls, stack the cart in a smart way, and work your package car in a way where you minimally have to move it around the mall. Do your backdoor deliveries as quick as you can before the parking lot gets busy then find a spot to park and walk the back hallways. No bells or whatever else you were looking for. It's pretty simple. Also, get a map if you don't know the mall that well.