My husband and I just returned from a private tour in Hanoi. I was so disappointed and unhappy with the trip that I vowed I would not visit Vietnam again. What really got me was the tipping, which was demanded. Prior to the trip, we'd arranged a private, luxurious tour with a tour company. Everything was paid for in advance. It was not a cheap tour. When we were sent to the train station to take an overnight train to Sapa, my husband, being generous, gave the driver a small tip. The driver immediately counted the money in front of us and then 'threw' the money back at my husband and walked away. We were stunned. If he'd found the tipping not enough, he could have said so. We didn't go to Vietnam to be insulted, and our travel tour guide told my husband that he should have known - US5 a day/ US2 per person per day for the driver, US10 for tour guide (market price). Really, how could we have known? Even if the tip is not enough, I don't think people should be so rude that they throw the money back at you.