If you go back around eight years ago...that dramatic environmental meeting on some island...they basically gave you a slot where you could land...off-load your passengers and cargo, and then take-off (usually limited to 45 minutes). You then had a list of five islands nearby which had airports and ramp space to park. I think in that case...between 500 and 700 private planes were involved.
It’s just some extra large circus operation waiting for someone to film the whole thing and make it into some comical movie.
Same thing at Davos. Not enough parking space except for certain ‘eliter’ attendees. ;-)