Buffets in Japan are often called “viking” バイキング (baikingu). Tabehoudai 食べ放題 means “all you can eat.”
Kinjo bakery in Shuri has a savory and sweet bread buffet, during morning and lunch/cafe times. It is really pretty good, and the price is not too bad either, especially if you bring your appetite (adults are 648 yen in the morning and 810 yen at lunch, cheaper for kids). You can stay for 2 hours, and there is self-serve coffee, tea, and juice. But it is total carb and sugar overload!
I only stayed for probably 45 minutes, just to get out of my office during lunch break, and nibbled on some breads, but even if I did not take full advantage I was happy with the price and everything was tasty (though I definitely had 800 yen worth of bread and tea). There were so many choices, and the staff kept bringing out more stuff. Next time I will need to bring my laptop and some study stuff, and use up my 2 hours. There were some small groups of people eating, as well as a few one individuals like myself, also students looking for a good bargain. I should have taken more pictures, the selection was overwhelming!