help me please – coming to okinawa

I live in seoul and i am coming to okinawa for the vacation

ill be there September 15th- 18th

15th i land at 10am so i have a good portion of the day to explore,

18th i live at 11am so i dont have time really just gotta get my self to the airport

I want

• beautiful beaches, snorkelling, relaxing, island vibes ..

Where do you recommend i go ?

I just booked the flight ticket now so have no plans as of yet.. didnt even know i would be going earlier today 🙁