From May 23rd to June 30th 2021, Murasaki Mura is offering free admission to its Ryukyu Kingdom theme park while actually being temporarily closed due to the emergency declaration for Okinawa. Sounds like a great opportunity for picture-taking like @Okinawanderer.
The 7th World Uchinanchu Festival has a date set! It will take place in 2022 from October 31st to November 3rd (note the website counts October 30th as the Festival eve).
The “World Uchinanchu Festival” honors the achievements of Okinawan people from all over the world, recognises the great value of the community heritage of Okinawa , and seeks to expand and develop the Uchina network through exchanges with Okinawan citizens around the world. The purpose is to bring people together, reaffirm their roots and identity, and thereby be able to pass them on to the next generation.
The festival is sponsored by the Uchinanchu Festival Executive Committee of the world, which is organized by Okinawa Prefecture and related organizations, and has been held approximately once every five years since the first festival in 1990 (Heisei 2). It has been held 6 times so far.https://wuf2022.com/en/about
JTB has a newsletter you can sign up to for tour package information. They will have escorted group tours and are also able to help you plan for individual travel packages too. Check out their link for more details.
Follow WUF 2022 on Twitter for the latest updates.