The documentary "Our Comiket's History: 50 Years" is now available for viewing at NHK World's archive. A 45 minute show with tons of historical and current footage looking at the event's history and current state.
Only available until May 3.
@johnherbert The most important difference is that:
Normal red taxi (Urban taxi) will charge double fee for the tunnel fee for taxi going back.
As for the taxi wait at cross harbor taxi stand, it will only charge single trip.