Anonymous participant definitely for the extension but I've also seen a couple of reports of people being asked to show it on re-entry

KL, or any of the Malaysian consulates, are difficult to deal with

They certainly can ask but they normally do not

KL has a reputation for being difficult

I don't believe a DTV can be cancelled but it can be converted to another visa type at your local immigration office. Whether or not your school will provide the paperwork for that is between you and the school. I don't believe you can get the Non-B at a consulate outside of Thailand as you can't have 2 current visas

A Thai driving licence is fine. I don't know about the Australian ID

You would show proof of your business, forget IG, business registration, proof of taxes, some invoices correlates with your business bank account, etc. Plus a letter from your business giving you permission to work remotely from Thailand. You apply and once your DTV has been issued your wife applies quoting your DTV and providing marriage certificate etc

@Chris ****

I don't think that's the case. I've certainly had no communication from the bank. I need to go in next week anyway to get paperwork for immigration so will be interesting to see if they say anything

It's going to depend on the DLT office you go to. Some will require a residence certificate from immigration whether you have a yellow book or not.

I doubt anyone who opened an account with bangkok bank directly themselves and provided proper verification of their identity at the time will have any issue.