Our guide, Tuyen, picked us up at the airport and delivered us to our hotel, the Silk Path Hotel. He and Khai, our driver, will be our best friends for the next five days as we explore the city and then later move on to Halong, 3.5 hours away. It was evening. Tuyen said that weekends here are times for big celebrations. Streets are closed off. People are out until late and music and entertainment is available on the streets. The most popular area is the str...