Before I picked up my Rock N Roller cart, from time to time I'd have a fan want to talk to me as I'm trying to load out. My trick was to say, "Hey, I'd like to keep chatting with you. Grab that case and follow me to the truck." In those situations, I tried to make sure it was the hardware case I was asking them to carry.
But this was all after everything was in its respective case and I needed to get gear to the truck.