That is quite normal. Appointment slots are open only up to 30 days. Slots on the next day are available at midnight. And slots are booked up quite fast in Bangkok. You may want to try just after midnight.

Also, people sometimes cancel their booking, then slots become available from time to time, so you may keep watching.

An extension is not cancelled officially when it expires. If there is any small chance you will apply for an extension for whatever reason, DTV-based or any other, you'd better cancel it officially at the immigration office that issued the extension to avoid any trouble when you apply for an extension in the future.

Thank you, but this post is not going to collect each office's "max remaining days" policy...

Your 90-day reporting window in person at the immigration office is between 15 days before the due date and 7 days after the due date. You can submit a report within this timeframe without any issue. If you are late to this "7 days after the due date", you will be fined 2000 baht for not reporting.

All the penalty for lack of reporting is a 2000 baht fine. Failure to report doesn't affect the next application. However, you will receive a stamp mentioning a 2000 baht fine on your passport. Some people don't care about it at all, and some don't like to have it.

@Steve ********

, it is "application denied, 7 days to leave the kingdom" type stamp. What is different from 'standard' extension is that you cannot apply for another extension for whatever reason on this stamp, and you have no other choice but to leave Thailand within those days. How to is explained in another post referred to in another comment on this thread.

@Steve ********

, that's right, except that the 7-day stamp is no longer an extension. Your comment didn't come up. Thank you anyway.

@Jeremy *******

, Just unnecessary additional information.

In case you can apply for cancellation only on the last day, and you want a few extra days to leave, you can "buy" up to 7 days, as I explained in this post.

3/

@Jeremy *******

, a Work Permit can be cancelled in advance, too. But you'd better check with your labour office and immigration office whether they accept "early cancellation".

You must cancel your extension before you leave if you don't want any issues.

An extension based on employment is not automatically cancelled even if it expires. An expired-but-uncancelled and existing extension will be an issue when you apply for the next extension.

You need to cancel it officially at the immigration office that issued the extension for you to be able to apply for a new extension from your new visa later.

The best is to cancel before you leave. You can cancel it later, after you enter on a new visa, but you may be fined for not cancelling in time, which means after expiry.

Most immigration offices allow you to apply for cancellation in advance, a few days or weeks. If you have time, go to the immigration office to cancel it before your travel.

Please check the LTR website, as it has information about most procedures. You can contact the LTR section for more details if you need.