Tra is by far the most consumed beverage in Vietnam. It is served both hot Tra Nam, and iced Tra Da.
Many hotel rooms offer a complementary thermos of hot water and a tea set.
Vietnamese tea is slightly different from the tea we typically drink in the West. Loose tea leaves are steeped in a small teapot and then served in tiny tea cups. Tra is so ingrained in the culture, it's simply second nature. If you stop into a shop to inquire about renting a motorbike, you'll likely be invited to sit and have a cup of tea. Many restaurants will automatically serve you tea after dinner.