Often times there are prefecture or area product fairs that travel to Okinawa. One of the best locations to host these is the Ryubo department Palette Kumoji store in Naha, though often times you can find smaller scale fairs set up in the Aeon and SanA malls.
Kyoto and Hokkaido seem to be the most common, but they come from all over (previously I posted about a tea and sweets set from a pop-up cafe at the Mie products fair). One of my favorites is the Italian fair that comes through about once a year at the Ryubo… so many amazing Italian wines, cheeses, and more. We often buy the wine set (usually 3 -6 bottles per box), of assorted wines selected by a sommelier.
Recently I visited the Kyoto fair at Ryubo that comes through at least once a year. There was even a geisha and maiko traditional Kyoto dance show. There were tons of samples of nihonshu (sake), tea, candies, snacks, pickles, etc. There was a pop-up specialty cafe, as well as several special Kyoto-style bento sellers for the event. I made a few food purchases of items not easily found in Okinawa. And of course, I indulged in buying a mini wagashi set for later to have with tea; I simply could not resist the beautiful designs.
If you live in Okinawa, I highly recommend not missing these special events when they come to the area. You can indulge in samples and purchase all sorts of quality products that the regular stores don’t usually carry.