That's odd... I had to transfer my visa (was an Non-O Ed) to my new passport BEFORE I left the country at immigration because the border officials wouldn't let me exit with the visa in my old (no longer valid) passport.

Are both of your passports still valid or did they cut the corner off of the old one and stamp it?

Standard. All landlords (hotels too) must report a foreigner living at their property. That being said, only certain offices seem to care if you have one or not and, it is usually only needed when you do your 90 day report. For instance, in Chiang Mai, many people were suddenly fined when they started to enforce it. Whereas, so far, Bangkok offices don't fine. Here's a document sent to all the condos in my building.

Used my work permit in lieu of resident certificate on more than one occasion (purchasing bike, DL licence, etc.). Whether or not immigration will consider it enough....anyone's guess really.

You will also need to have the landlord file the TM.30 form within 24 hours of you taking residence in your girlfriends home.

@Ste***

, you DO NOT need to have a visa to enter Burma at Mae Sai (Tachileik). You can enter, pay 500 baht for a "pass" that allows you to enter the town for a short time (they keep your passport), shop and return, or, simply get your stamp and turn around and go back into Thailand. Lots of people do this to get a new 30 day exempt entry.

No... you can just go to Mae Sai by car, park, walk across the border and back. Super easy.

Good luck. You can book the trip via Green Bus online and then pay gor your ticket at 7-11. Highly recommend VIP seat for comfort.

I usually book 8 am to go to Mae Sai and 2:30 pm return. Gives me enough time to cross, back and grab a quick lunch. Or go and spend a day in Chiang Rai to check out the area.

30 days for sure. Used to be 15 but changed a couple of years ago. Also, you can extend that 30 days an additional 30 days at an immigration office within Thailand (1900 baht fee).

There is a 500 baht (or $10 US) Fee you have to pay to get your stamp in Myanmar. Just pay, get the stamp, turn around and back into Thailand. So yes...same day. But it will take you all day to go there and back from Chiang Mai. Green Bus is a good option.

You get 30 days visa exempt entry at the border to Myanmar (Mae Sai). You are allowed to do this 2 times per calendar year at land crossing.