Tickets are bought, into Hanoi mid May, out early July. At very least, I plan to spend some time in Vietnam, Thailand and Myanmar. With that amount of time, is it advisable to add another destination or to devote more time to those three? I am considering going overland from Thailand through Laos or Cambodia to get back to Hanoi. FWIW: I am traveling with my 21 year old daughter. I like to walk the earth, meet people, get in adventures. Hitting all of the "must see" sights is not necessary. I don't require luxury. How would you spend that time? Any advice appreciated.