We believe that teams left Narita by TAXI and proceded onto Shiba Park
and Tokyo Tower
They may have been looking for a "studio" "green room" within Tokyo Towers.
The only "green room" reference I can find is for a Tokyo Tower Lounge
, a studio house design featuring a contemporary green motif.
While the observation deck is open until 945 PM, which the racers should have been easily able to make after their 4-ish plane arrivals... I am not sure of the hours that the lounge is open? It is located on the 54th floor. General tower hours are 9AM-8PM.
The hours of op could determine if they would be sleeping in the Park or heading for another clue...
And hopefully they all changed lots of $$, as the fixed taxi fare from Narita to that area would be Y210,000, which would be approx $200.