There were roads from where we were dropped off to the stadium, as they go to the small airport next to the stadium, and were being used for cars going to car parks. I think perhaps the bus didn't drop off at the stadium entrance because it would then have got caught up in traffic queues.
The route back to the collection point was not drivable, and which, in the dark, would have been difficult for some people - on distance alone, not taking the surface into account.
It's one of these things where a little bit more organisation and thought would have transformed the experience.