She cannot switch to a DTV in Thailand, but she may apply for one at an embassy in a neighboring country once everything is in order

You can apply from 45 to 30 days before the due date, and up until the very last day (although this is not recommended). Normally, you will receive your passport back during the process. At some immigration offices, you can pick it up the following day.

You must provide a travel itinerary, specify a flight number, and give an address/booking in Thailand, but you do not need to upload tickets or follow the stated itinerary after the visa has been issued. They will also normally not request any additional documentation regarding accommodation for a Non O visa.

The only extension available for the 90 days Non O visa is the one year extension of stay, unless you’re married thai or have a thai child and can apply for the 60 days extension visiting thai family. 30 days extension is only for stay based on tourism.

I'd recommend hiring a professional land border transport company for the border run, and my personal guess is you're at high risk of being denied another entry on your own now, but everything is as you know up to the IO you’re dealing with. Next time get a six months multiple entries tourist visa in UK before you go.

@Arendarski ******

If you applied for and converted your tourist visa in-country, you are no longer on a tourist stamp but on the initial 90-day Non-O visa.

If you are having problems opening a bank account while on the 90-day Non-O, you can still apply for a one-year extension of stay using the same affidavit letter from your embassy confirming your income. After that, you should have no issues opening a bank account.

You’ll need to leave to cancel your current stamp and re-enter to activate your Non O visa. You can’t convert any stamps as you already have a new visa.

For the family VISA, which means a 90 days Non O based on marriage or having a Thai child, you may apply for the regular one year extension of stay OR a 60 days family EXTENSION visiting thai family.

If you’re on a 60 days tourist visa or 60 days visa exemption and also are married to a Thai or having a thai child, you can also apply for a 60 days family EXTENSION visiting Thai family.

@Steve **

Converting a driver's license is quite easy! Just make sure to bring an International Driving Permit (IDP) as well. Allows you to drive for 90 consecutive days in Thailand in first place too.

Foreigners can apply for a Non-O visa in Malaysia, but there is no option based on friends, relatives, or fiancés.

You can apply on your own behalf based on retirement, custody of a Thai child, or marriage to a Thai citizen.