I am curious about theme park traffic flow and you guys here seem to be the experts, so I am condensing an earlier post that had no response:
Do any theme parks apply one way traffic (apart from queues)? The HP films had actors being directed where to be located in Diagon Alley, but in this DA it will have tourists with cameras and will probably be crowded and hectic. Would a roundabout traffic flow work by having entrances and exits to DA, KA and Gringotts? On the London plans there is a lone building (top right-ish) and I wonder whether this could be the central island of the traffic flow.