I have never been but @joanp may have.

In addition to @jul suggestion of Nakano Broadway, Ikebukuro has become another popular anime spot.　

In general, all of the places have shops that are cramped and inaccessible, those that are accessible, and places in-between.

It’s possible.
https://support.go.goinc.jp/hc/en-us/articles/25883320478745-What-is-Ride-Preferences

But it’s not perfect options because of wheelchair specifications and driver’s skills to set up ramp. Additionally taxies would be Japan Taxi, not Van type vehicle in most cases.
https://global.toyota/en/jpntaxi/

Hello,

Are you using a manual wheelchair or power wheelchair?

Yoyogi Park and Meiji Jingu are essentially next to each other and the entrances are maybe 3-min walk from each other. Takeshita Dōri is only a 1-2 min walk as well. Extremely doable in a day, more like a half-day. The top of the street from the station down on Takeshita is a…

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I am also interested in renting a WAV in November to go to those areas! Hopefully we can find a rental place!

Looks good to go for both the plug and the voltage!