You go to the Immigration office where your staying, yes you can apply 2 weeks prior, its added to your 60 days stamp not from the day you apply. Not sure about copies at the office but most do have facilities to do it. You may also need the TM30 some office require some dont.

You could drop in to the immigration office and ask what they want.

Did you actually apply for a visa or just got the visa exempt stamp on arrival, If applying in Bangkok it would make a difference to the office you go to. Chiang Mia probably same office.

No visa required and you get 60 days now not 30

@Wayne *******

as already said I am on a multiple entry visa

@Jim **********

I come and go every 2 weeks to Australia

@Jim **********

If you need re-entry permit maybe but I don't as my visa is multiple entry

@Jim **********

I have a visa and always use the self scan. I leave and come back every month and not had any issues about self scan out.

As Stuart already said. You have until midnight to pass through immigration on the last day

Online education course does not require any visa as you can do it from your home country. Ed visa means you need to attend classes not do it online.

@Sandy *******

someone with intelligence would have included their country passport to get an intelligent answer

@Brandon ***********

Agree there. Not many understand what OX visa is