This article in Japanese is about plans to go ahead with a public viewing event in Kumamoto-jo Hall (downtown, near the International Center), despite Tokyo’s cancellation of a similar event that had been planned for Yoyogi Park. See the second URL is for an English article on that topic.
Personally, I prefer to stay at home and watch on TV. Medical expert Shigeru Om has been testifying in the Diet recently that the real danger from the Olympics is not interaction between athletes and staff but the moving, intermingling, and celebrating of the fans. (See third URL for that.) – Kirk
https://news.yahoo.co.jp/articles/148c0d55e2f7d7f4318d4db7c684185b83c000d4