@Den***
You could have snapped up a single entry tourist visa from the thai consulate in Yangon Burma before you came here. They're easy to deal with,
BUT
I'd say once you're here the easiest one to deal with is the one in Vientiane Lao.
As far as reporting addresses, hotels and guest houses do it for you and depending on where your friends are and where you're going to stay the immigration office might not even require it.
I'd burn that bridge when you get to it. ;)