My experience changing temporary 2 year license to 5 year license:
No appointment is necessary at Hang Dong Office https://maps.app.goo.gl/Rwy3NZeM5MCf8tYf8
As already mentioned do NOT queue up at the Info window in the middle, but go directly to window 27 for foreigners.
From 2 to 5 year renewal NO test is necessary (but from 5 year to 5 year watch online video and answer simple questions at https://www.dlt-elearning.com/ before showing up at the office).
No photos are necessary.
The following documents are required:
1.) Medical Certificate (original and signed copy for car and moto)
2.) Certificate of Residence from Immigration close to Airport 2nd floor (original and signed copy for car and moto)
3.) SIGNED copy of TM30 which usually resides in your passport (2 copies for car and moto)
4.) SIGNED copy of 1st passport page + visa + extension + entry stamp (2 copies for car and moto)
5.) Old Trial Driver License(s)
You drop all this together with your passport off at window 27.
You will have to fill out a simple form with name and phone nr for each driver's license.
You are asked to sit down.
Your NAME will be called after a while.
You will be given a print out of your data for the license! CHECK IT - my address was incorrect - they simply took the old license address and not the one from Certificate of Residence.
You make a visual test for color blindness.
You are given a number.
When the number is called you go to the window specified and pay for your driver's license (205 THB motorcycle, 550 THB car) - cash & promptpay, card with extra charge
You are ushered in to the musical chair room where the photos are taken and at the same time the driver's license is printed and handed to you.
DONE (Total 2 to 3 hours right after their 12-1pm lunch break)
International Driver's License:
I wanted to get an International License too.
The clerk refused to even talk about it until I had my new Thai licenses in hand.
Then I was told validity was one year, cost for car license500 THB, and I have to specify the country for which the license was valid. Those restrictions were not attractive for me, so I passed.
I hope this will help someone. :)