Actually this is my second time to take the MPV bus in Vietnam, my experience is very good, the driver come to my place to pick me up with a little bit late but no more than 10 minutes, and the time we arrived at Mong Cai are very on time, very suitable for a four hours trip. The driver was quite punctual, picking me up at around 8:30 and 8:40. The bus is very spacious and comfortable with one seat per person. The whole journey was high speed and there were no random stops. The driver and the bus owner can speak Chinese, and if you have any questions, you can just call the owner to ask, so it is very comfortable.