Okinawa rules (for forigners) By 47472019-01-252019-01-25aboutOkinawa do not enter Utaki. Utaki is sacred place. only limited people can enter. so please stop and just look from outside of the entrance.Utaki is similar toShrine with sometime Torii you may confuse. sweet potatoes include purple sweet potatoes can not take out side of Okinawa. Adan is not pineapple (not eatable usually).