It depends what his will says.

Generally speaking a visa is something you buy before you travel, that allows you to enter a country for specific reason. On entry, your passport is stamped with a date that you have to leave by, depending on the visa you bought. An extension is something you buy inside Thailand at an Immigration office - it's a stamp that permits you to stay for a specific period of time and for a specific reason (e.g. Retirement/Marriage to a Thai/Work).

@Roger *********

Only for Visa Exempt entries. Visa on Arrival is 15 days and costs 2k.

@Andreas ********

That's tough.

No. But I think you'll get a '7 days to leave' stamp.

@David *******

Yes. Whatever you use must be in English.

If you have a Thai bank account, they can print out a statement with the address in English. If you're working, they will accept a letter from your employer confirming your address. Otherwise a Thai driving licence or a 90-day report receipt showing your address.

@Pauline ******

If you're in Thailand online isn't possible. You would have mail in your expired/old passport.

If you're in Thailand you apply through VFS in Bangkok or Chiang Mai. Depending on how busy HMPO are (in Liverpool) it can take anything from 3 to 10 weeks.

My 8-year-old, who has always had a proper Extension, was picked up on not doing 90 day reports at our last Extension, although there was no fine.