Ramen restaurants in Tokyo are very compact and less tables venues in general except ones in shopping malls food court. In Asakusa area, you may visit Ramen restaurants in Solamachi at Tokyo Skytree.

https://www.tokyo-solamachi.jp/en/restaurant/?m_category=20&page=1

You can also refer to these guides of accessible restaurants…

Read more

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/

Check if your wheelchair fits on this vehicle;

https://meguritaxi.com/english-carecab-page

Very pleased to hear that our services were helpful during your stay in Tokyo.

It was my pleasure to assist Nick and his wife in enjoying the horse racing in Tokyo. Here is my update about his visit at Tokyo Racecourse.

https://odekakeoffice.jp/en/2024/05/07/tokyo-racecourse/