Just be warned when booking for busy…
Just be warned when booking for busy trains. We are a family of 5. In Thailand you can only book 4 tickets at a time through Thai Railways. It isn't part of Baolau's "service" to book for 5. So you have to make two bookings. Only one of ours went through. So we were stuck as a family with young children travelling on overnight trains separately. Baolau point blank refused to accept any responsibility for allowing us to book a fifth ticket (which they issued) but not issuing the previously booked four tickets on the same train. Unnecessary stress. Also you have to pay when making reservation, due to exchange rates, what they refund when they can't complete a reservation is less than what you pay. Buy tickets at station if you can. Book using Vexere in Vietnam - no service fees and direct booking.