@Tod ********
I have 3 problems, i wanna go to Udon, because i have many friends there, and i need to go to Vientiane because i have many friends there.
And extra .... Vientiane is option in budget and I don't wanna expend a lot of money because after songkran i come back to spain.
That's the point, and extra i was reading and in Malaysia my second option is canceling many visas.