The Champions League final this year was small fry compared to the Olympics.
For a start one of the sides was from the UK (most of the fans probably from London
).
As stated previously, the Olympics will have around 150 visiting heads of State and the associated precautions. There will be Aircraft landing at Airport A which then need to reposition to park at Airport X due lack of space etc etc etc.
Then you have different peaks of traffic from individual countries that perform well during particular events.
There are issues to resolve, but on the whole I understand the nut is largely cracked.
