Oh man, my family is Okinawan, and when we were visiting Aomori, this touristy market had an Okinawa fair going on and my kids went to go get a traditional Okinawan donut snack (we had been travelling for two weeks and they missed the taste of home), and when my kids thanked the staff in Okinawan, they looked really puzzled because I think they were just mainlanders selling Okinawan goods. I’m not even sure if they were even aware that we have a different language here. My kids looked really bummed.