Yes, the re-entry permit counter is open n at DMG. It is a small room with an overstay fine counter behind passport control desks, after passing passport control and before security check.

Tell the officer at passport control that you need a re-entry permit, you will be directed where you should go.

Attached is general information for the re-entry permit. You need only original passport and pay 200 baht extra, or you bring all necessary form and photos no extra fee.

Allow 10-20 extra minutes for the re-entry permit procedure.

The question is, what is the "until date" on the stamp of the current visa or extension ?

If the due date was yesterday, it's a bit too late to your saying "reset". But you still have until 7 days after to report physically at Chamchuri without any issue. A 90-day report can be done without you attending in person.

@Jonah ***********

, well, you don't send original passport for 90-day report by postal mail. Check your local office what you should send for 90-day report.

For example, in Bangkok, you send all copies other than last 90-days report <- if you did the last one in person or by postal mail you send original receipt.

@Xavi ****

, you can as long as you meet the requirements at the embassy/consulate you apply for your visa at.

@Andrew ******

, are you aware OP is in Udon Thani? Ranong border is unlikely convenient for him.

@Joe *****

, consulate in Savannakhet requires appointment and processing time is +2 days.

@John *********

, later part depends on the hotel/guest house. Many check every guest’s ID, not only main person.

It's immigration office-specific if they require you to submit TM30 again after domestic travel. Some offices don't require you to update TM30 after domestic travel. You need to check with your local office.

But if you want to use the online system for a 90-day report, better to submit TM30 again after any travel regardless of your local office policy. 90-day report system checks your address with your latest TM30 record.

@Somjib ********

, no you need 2 months statement as before. But please make your own post for further detail.