An MTA MetroCard can be used for both subways and buses, and transfers between the two modes of transport - which run 24 hours a day - are free. Accommodation in NYC: http://www.roomyeti.com/rentals/united-states/new-york/new-york/
Harajuku - every Sunday between 2 and 3 pm in Harajuku in the park 2 blocks to the left from the subway exit there is a Cosplay fest held and you will see all kinds of people and characters. But beware, there are creepy men there that will try to hand you things. DO NOT TAKE THEM. It is their phone number and they will be expecting you to call for sex. This applies everywhere in Tokyo. You can pick them out because they keep their head down and speak quietly.
Speaking of class(less)... In this "ad" for Speed Stick deodorant a guy (who actually runs an online how-to on getting women's phone numbers) applies Speed Stick then damn near rubs his pits in the face of a woman on the subway while picking her up. Two things: 1. I can't believe there's a guy making a living on YouTube filming himself getting phone numbers (often through deceit or trickery) and 2. I can't believe Speed Stick is supporting this guy!
I had the sudden thought, what if Matthew and James had met on a crowded subway, when Mattie got tired and accidentally fell asleep against the person next to him, then found a random phone number in his pocket~ (I'M REALLY PROUD OF JAMES' BLUSHY FACE, OKAY?)
"May I see you again?" "Sure." "Tomorrow?" "Patience, grasshopper. You don't want to seem overeager." "Right, that's why I said tomorrow. I want to see you again tonight. But I'm willing to wait all night and much of tomorrow. I'm serious." "You don't even know me. How about I call you when I finish this?" Augustus Waters: "But you don't even have my phone number." "I strongly suspect you wrote it in this book." "And you say we don't know each other."