Editor’s note: Sign up for Unlocking the World, CNN Travel’s weekly newsletter . Get news about destinations, plus the latest in aviation, food and drink, and where to stay. CNN  —  In this week’s roundup of travel news: visiting the Japanese island of Okinawa 80 years after the World War II battle, the riskiest part of your airplane flight, plus new tourist taxes around the world. Passports, visas and entry fees We live in an age of unprecedented travel freedom, but recently a few doors have