I'm surprised to hear that pizza delivery people can only deliver to the front desk at BWV. That may be the rule, but it's not the way it's working in real life!
I know this because we had pizza menus from outside vendors placed under our door at BWV several times during our stay a couple of months ago. And, we were on the 5th floor and very far from the elevator. There was even one menu in the hallway obvious to any BWV employee who happened to walk past. So, pizza delivery folks are obviously going up the elevator to the rooms! Not surprising since one does not need a room key to access room floors.
I've often thought that pizza delivery is one of the obvious gaps is WDW security. I think it even more since our last stay.