日本の都市部(東京以外の地方都市も含める)では隣に誰が住んでいるのか知らないしあいさつもしない。おじいちゃんおばあちゃんや子供たち、海外から来た留学生などは公園でよく話したり遊んだりしている。大人たちは孤立している。
In urban areas of Japan (including regional cities outside of Tokyo), people do not know who lives next door and do not greet each other. Grandparents, children, and foreign students from abroad often talk and play in parks. Adults are isolated. 

 Everything I learn about Japan is so interesting. Finally planning a visit in 2024. 

 東京、京都、奄美大島をお勧めするよ。 

 I’ve not heard of Amani Oshima - thanks for the recommendation. Planning a trip in November. I hope that’s an OK time to visit Japan. 

 The nature of Amami Oshima is wonderful. it is cold in November, so Beppu Onsen might be better than Amami Oshima.
 you can see beautiful autumn leaves in November.
奄美大島
https://www.exploreamami.com/
別府温泉
https://beppu-tourism.com/en/
京都の紅葉
https://souda-kyoto.jp/guide/season/koyo/index.html 

 Thanks for the tips and the links. Will add them to my itinerary.