I have personally be dropped to the ground by a rolling cooler. The person was pulling it behind them as they crossed through traffic, completely oblivious to any other guests. No way to see this cooler in the crowd and it took me down. Clearly they realized what they did because of a slight entanglement but they quickly rushed off without checking on me. The same hit and run has happened with wagons without the giant tents on top. And I am not moving quickly or running as I am walking with my DS who is disabled and not fast.
I wish Disney REFUSED entry to anything with wheels except strollers, wheelchairs and
ECVs. No backpacks, no tote bags, no coolers and no wagons. Even when told they can not roll them they do it the minute they are past security, Security should make them take back to car or check them. They are a hazard.