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If you plan on most of your within the center of the city, make sure to get the subway passes. Well worth it if you only take Tokyo Metro or the Toei Subway.
Sorry, as an American I'm used to people not going anywhere or knowing anything about other countries. It's a shame. And I was talking Scott the unlimited passes and not thePASMO. https://www.tokyometro.jp/en/ticket/travel/index.html …
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been saving for a year or so & am doing the whole thing solo... wish me luck! also planning to stream every day while out there to share the experience!
so excited! 
done it as cheaply as i can without staying in hostels!