Show where they have had to be called any significant amount of time for this type of issue, for people who unexpectedly got left out to walk 3-4 miles in the cold. You claim it happens but that it isn't possible to show evidence that it happens at concerts or games? Then there is no evidence it happens. You are trying to say that such an event wouldn't make the news, ever? Because you have failed to provide even one example, let alone any significant amount of times that it has happened.
Walking 3-4 miles in the cold, especially when talking older people, takes over an hour. That would bring news crews, who are likely to at least have someone nearby anyway.
You are making excuses for Trump. Any other venue that did this sort of thing, that did not plan ahead would have people mad at them, would cause problems for whoever did it to them. This wasn't simply people who themselves walked that distance to that spot, and expected to have to walk back the same way. These were people shuttled in because they had no choice of where to park, and then were expecting to get shuttled back, but couldn't. That is what happened. That was a lack of responsible planning on the part of the Trump campaign, just as it would be for any other event planners of such an event, or similar. Like I said, the State Fair happens in our area so we go every year (it happens). They have parking that is pretty far away. But they provide buses to transport people to and from those places and plan ahead for traffic, coordinate to ensure that everyone there will be able to be brought back to their vehicle, doing routes around. They block off necessary roads to ensure this is the case. They do not leave people out in the heat or cold to walk themselves.