It is for all foreigners in Thailand when making an extension. A. Hotel stay......They contact Hotel (who should have registered you)...or B. You are in short stay and not a hotel....they contact Landlord or Owner......or C. Long Term stay with a contract. You as the Housmaster or Possessor of the property lodge it yourself (recommended).

It is no problem. May be a fine or may not be...depends on the day. Complete and lodge the TM30 when you are there and then apply for the extension. As a long term renter you are responsible to lodge the TM 30 yourself, not the Landlord. You signed a lease, you are now the Housemaster or Possessor of the property. I have not heard of anyone being refused an extension.....but you never know....

I javen't heard of any refusals

I went last month. Took longer than it used to before TM30 (obviously). I used to be in and out in an hr / hr for an extension before....now it takes prob 3 hours or so. No big deal.

Yes and you may also need to complete the TM30 form when you arrive. Process that so you get your TM30 slip...Go and get a copy of that and submit the docs for the extension......

Just go to a small shop and it will be a lot less.

A tourist visa is no different by land or air and is not related in any way to the 2 allowable visa exemption land border entries.

Good comment. :)

There is no ATM before immigration and they do not let you go go to one and you can't show them a bank balance, it must be cash. A ''stupid rule" can still get you put on a plane back home. Always be prepared. By profile, I mean it is 100% up to the IO as to who they want to admit.

Let's hope you are never asked then....There is no profile. If they are having a bad day they might ask. It is their right to do so at any time and they don't need a reason.....