I asked her where she planned on going and she said Chelmsford. We will all hire congregation buses to get there. I asked her if she thought they would have facilities for 130,000+ permanent visitors. She thought they would have!
Not only is that silly from the point of view of how scaled back the Chelmsford development is, it's also ludicrous to think a mass movement like that could be done without being noticed by "the authorities", assuming said "authorities" were bent on hunting down JWs.
The Org has hardly been secretive about Chelmsford, so of course the local council, police, etc, know perfectly well where the site is, what is located there, what its capacity is, what roads and public transport lead there, and so on. And as the video shows, Witnesses are supposed to be travelling there with their mobile phones and tablets on, thus acting as perfect homing beacons for the authorities, should they wish to track these "outlaw" religionists!
The whole idea is absurd, and not at all supported by Scripture, except as a flight of fancy extrapolated from the verse that speaks of going "into your interior rooms" to avoid the "denunciation".
At one time this was interpreted to mean each Witness or family hiding in their own homes, then it was thought to mean the Kingdom Halls, but now they're closing many of those, it's back to some strange hybrid interpretation of groups in homes or other JW buildings.