@3:22, I notice you buy a ticket to enter the Tokyo Station. When do you leave the station using the same ticket? We have eaten the Ramen in 斑鳩 (Ikaruga) in 東京駅一番街 without tickets. There must be more restaurants to explore inside!
@ 6:43, I got out of the ticket gate. Inside the ticket gate is a place called "GRANSTA Tokyo". Even if you don't get on the train, you can enjoy it by buying a ticket. Famous shops in Tokyo are gathered here.