well if you go to the one near Pattaya they give you a list of what you need because you need an appointment and a time allocated to do the test. That’s normally within the next few days. Well I did my 5 year 3 months ago.
an IDP licence is only good to drive in Thailand for 3 months from arrival. It’s better to get one as you only take a colour and perception test at the office. Easier to do it. It also puts your full driving ability on it. So if you ride a big bike they give you that here.
There are some new condo’s selling with a visa as a bonus maybe look into that. But remember if it’s a 10 year one you might have to hop around for the last 2 years