SE Asia Winter Break 2015-2016

I have always wanted to travel. Since I am living in Japan now, I am looking forward to travelling near Japan. My first pick is SE Asia. Since I only have 3 weeks (Dec 19, 2015 – Jan 11, 2015) and my top priority is to visit many countries as possible. My itinerary include (in order): Myanmar, Vietnam, Laos, Cambodia, and Malaysia. Since I had time at the end, I ended up going to Singapore as well. I forgot that Jan 11 is a holiday so I actually came back one day earlier as expected, on Jan 9. That was a mistake, but oh well, one day touring was enough in  Singapore so I really did not know what to do in one day anyway.