You can go any day to do a 90-day report at the local immigration office between 15 days before and 7 days after the due date (in case you will do it in person at the local office).

You may be fined if you miss the 90-day report, but you will not receive any "bad mark" in your passport even if you fail to report within 90 days anyway.

Draw a map from the nearest landmark. It could be a part of checking that you are really living at the location. It depends on your local immigration office whether they accept Google Maps or not.

Attached style map can work as a hand-drawn map.

If you are on ED-plus extension, you are supposed to be able to apply for working (non-b, non-o working for organizations, or perhaps non-rs) without leaving kingdom. Why not talk with your local immigration office and your employer in future.

If you cancel your extension, you have to leave within the day as ED-plus cannot have future data to terminate the extension.

You need to have funds of 800k baht in your Thai bank account for full 2 calendar months as of application day for a new one-year extension. Some offices ask for 3 months instead of 2 months.

“3 months after the extension granted” is counted from the day you get your new extension stamp at many offices. But there are a few offices that count “3 months after” from the day your new extension starts.

You need to check the province specific detailed policy with your local immigration policy.

@Donald *********

, you can go there only after you check in for the flight and clear the security screening.

You can access the re-entry permit counter from airside after you are stamped out if you go to another departure gate. Just tell the officer you need a re-entry permit.

Go to International departure Gate 2 when going to the security check at Suvarnabhumi airport. Go to the right at the bottom of the escalator after the security check. It's the easiest way to find the re-entry permit counter (they put the name "Re-Entry Visa").

You can bring a filled TM.8 form to save 5 mins to fill the form there.

You can bring a passport-size photo to save an extra 200 baht service fee.

funds of 800k baht in your thai bank account to meet the financial requirement for in-country initial non-o visa based on being over 50 must be transferred internationally.

no specific period of seasoning is required for initial visa application at the immigration office. funds in your thai bank account for minimum two months is only for a one-year extention. <- these are what in the police order.

but jomtien and a few other offices require you to have funds for certain amount of time (2 or 3 month) even for initial via appicatipn.

Check with your local office for their requirements

Basic information about timeline is available on LTR official page.

You may or may not be able to submit 90-day report a week earlier. Sure you can try and nothing to lose by trying to do 90-day report with your extension. The worst thing they say would be "no, come back next week".

All and only foreigners (who with foreign passport (s)) need to submit TDAC. Thai nationals don't.

That means, if she enters Thailand using a Thai passport, she doesn't need to do TDAC. In case she enters Thailand with a UK passport, she needs to submit TDAC with UK passport information.