@John ******

So there wasn't a separate line for people arriving from Cambodia? And don't mind Robert, he's always right and you can't argue with him.

You being with him probably won't make a difference. For the first 2 trips, were they maxxed out trips? (60 days + 30 day extension?) The extensions are what really seem to get immigration interested in someone.

The exit ticket is good and important to have, but the other 2 proofs are also important to have (20,000 baht or equivalent in another major currency IN CASH, and proof of a hotel booking for a week or two at minimum).

If each entry was only 10-20 days, it's probably fine. Just make sure you have the 3 proofs (cash, onward travel, lodging booking).

Some offices require it and some don't. For the ones that do, normally they just want you to get a copy of the ID card and house book of a Thai person, that person doesn't actually have to go to immigration with you. I'm not sure if there's a form for it or not though.

You could do that, but if you ever need to go back to your bank and they want to look at your passport, they could close your account. Or if they decide to do a new wave of KYC in the future and freeze accounts until the owners come in for verification, you could lose it then as well.

@Isaac *****

Owning property isn't really relevant. Banks don't care about that, they care about the visa status.

@Jim ******

you can use any agency, don't have to keep using the same one. But if you're not clear for this one (which sounds like the case) you could try an agency that will use your immigration office and your own money which will clear you for your own next year.

1) When did you deposit the 850k? Was it deposited before the agent got you an extension? If not, then you cannot get this extension yourself.

2) What province is the extension from? If it's from this far flung province, it's probably known for agent extensions and likely they'll tell you to use an agent again when you go into immigration and they see where your last extension was from. The TM30 isn't really relevant.

Only reports I've seen asked are proof of 20,000 baht and proof that you're still attending whatever class you used to qualify. No departure ticket

The marriage visa doesn't allow you to work. A work permit allows you to work. But a marriage visa does allow a company to apply for a work permit for you if you're eligible and they're able to sponsor a foreign work permit.