I've never been to Japan, so I'll just answer what I know about Okinawa. Okinawa's capital is Naha. They have their own language that is completely different from Japanese. It's not a dialect, it's Okinawan language. Most people don't speak the language anymore. Thus, becomes one of the dying languages in the world. Okinawa is located south of Kyushu island. Ryukyuan islands. The martial art Karate-do is originated there in Okinawa. There are US Armies based in the main island also (Most Okinawans don't like the US Armies. They want to get rid of them.) The Royal family of the Ryukyuan islands had good relations with other Chinese Kingdoms in Mainland China, the same goes for other places in Japan, Taiwan etc etc. The weather there are not so cold compare to other Japanese prefectures. Since it's near to the equator line. Good luck!