U can refer to the sticky thread on trip reports. There are some report on Okinawa.
U can also search this forum, there were threads on Okinawa previously.
Getting rental car is recommended, coz not easy to get ard outside naha if using public transport. Most of the attractions are outside naha city.
Most visit is subjective. For me, it is the aquarium
Here is my trip report:Thanks for info.
I had already search the forums before I post. The information is scant and brief.