It is very humid and hot in the summer in Okinawa.
Hence, we recommend you to put on the cooler shirt than a pair of suit during the conference including Banquet.
The shirts are called "Kariyushi-wear", which resemble Hawaiian-shirt.
You are able to wear any comfortable and cooler cloths like "Kariyushi-wear". A tie is also not necessary in this conference.
You will be able to find the nicest Kariyushi-wear In Okinawa!
