You can use the 90 days nonb whether you extend after that is up to you.

Talk to your local office whether they will allow you to change your reason for extension to dependant, because the medical extensions are an exception for emergency use its not likely.

However it's worth asking.

Otherwise you leave and start over.

1st step go the evisa site and get the requirements for that embassy.

2nd step apply for 90 day non-o based on being over 50.

It is not a "longstay" visa.

3rd enter Thailand with that visa.

4th go to immigration for a residence certificate, most offices will issue with a hotel TM30.) And get the local "retirement" extension requirements.

5th take copies of everything to bank and apply for account.

With the 90 day visa should not be a problem. Better if you have longterm accommodation in some cases.

6th get the 800k transferred from overseas within the first 30 days.

7th once the 60 day seasoning period passes apply for a 1yr extension of stay and then repeat this process yearly.

*SOME OFFICES have odd out of the ordinary rules.*

Costs of extension is 1900b.

OTHERWISE enter as a tourist and pay $$$ to an agent.

This has pitfalls but for some the only way they can get it done.

But if you don't qualify,

"you gotta pay to play".

@J *************

that doesn't change the rules.

@Maksym **********

please provide.

@Andi **********

can you please provide any factual basis for this comment?

Small print from an embassy, Thai embassy or which Bar stool....

@Mark ***********

REALLY???

20 year Elite

10 year LTR

Here is the correct answer for tourists.

All tourist require the 3 proofs:

1 proof of exit - usually flight out

2 20k baht or equivalent in CASH

3 proof of accommodation

You may never be asked but can be if they are deciding to let you in or not.

The airline is usually the one that could require it.

There is no visa applicable for scuba diving.

You will have to do tourist and then bounce.

@Katharina ******

sorry they're wrong.