Everything pork belly is good, of course (although nothing beats my inlaws’ homemade pork belly). Okinawa cuisine is inspired largely by Chinese cuisine, so that sets it apart from the main island-- pork being the big thing. There’s also US military influence so you get some interesting hybrids like Taco Rice, or Spam and Bittermelon (Okinawa has it’s own type that’s different than the Chinese kind).

Sweets, hard to say. Purple yam is their specialty crop but it’s more novel then anything. I’m more partial to the milk flavor, which the small town of Nanjo is known for (although I wouldn’t go just for that). I have found very rich brown sugar and fresh pineapple to be very good, too, I think grown locally.

Hope that helps, as always quality varies place to place and usually the best places are off the usual tourist areas.

Edit: oh I also just remembered a place that has a deep fryer in the middle of the table and it’s like Korean BBQ but with a deep fryer. Now that was a unique experience, lol.

Since you are there you might as well try some Chanpuru. It is a stir fry dish with Goya but it can be a bit strange for first timers. Not sure on what’s there anymore, been 15 years. Yoshihatchi is probably still there, pretty good sushi joint.

I also recommend that you hit up Peace Memorial Park if you can make it down to the south side of the island. Can’t remember if the tunnels are near that but those are interesting as well.

I hesitate to recommend you visit a CoCo Ichibanya lest you become hopelessly addicted for the rest of your life like me. But Japanese curry is just so damn good I don’t care if they put crack in to to keep you coming back.