you get it from immigration information desk, you will be bouncing between the desks, first you do cert of residency, then you go get tm47 and do your 90d
If my official address wasnt here on the day the license was given to me, I could not use it in Finland. You have to ask your home country about the rules
It depends on your country. For me, Finland, as my permanent address was here when i got my thai license for motorbike (dont have one in finland) i can use my thai license in Finland for 2years. Dont ask here, ask your local authority. You dont get answers here