Anonymous wrote:If it were me and my teen, I would do:
3 days at a Thailand beach to relax after travel, 5 days in Bangkok (so much to see there you can stay at one place for a while), and 4 days in Hanoi (to include leaving bags at hotel and doing an overnight on a junk ship at Ha Long Bay, which is a UNESCO world heritage site).
I did a trip to both in November, and this itinierary sounds pretty darn good. Ha Long Bay is not to be missed.
I don't know about 5 days in Bangkok, though. Maybe 3 there, then to Ho Chi Minh City for a couple days before Hanoi/Ha Long.