Yep, true. Best to just register for the online thing and do it anyways, it is easy.

Ok, I stay corrected :)

If a hotel in BKK re-registered you, you need to make a new one again to get your old address back. If not, not.

Yes, so it is impossible to get an extension if your visa is still valid, or if you do not have the necessary funds for 2 months.

Well,we don't know yet what the idea is ;)

If you have the necessary funds (800k for retirement) for 2 months in a Thai bank account in your name, you could apply for a yearly extension of stay without leaving the country.

Yes, apparently that's how it works in CM.

Ok, guess I will drop by next time I'm in the area and ask them directly. Thanks!

I am in Chiang Mai. From what I know people in Pattaya have to present the bank book after 3 months again to immigration, for this they have to sign a specific letter at the time of extension. No such thing in CM and again what I heard is a yearly statement at the next extension is enough. But so far this is all hearsay, nobody could confirm one or the other.

Yes, again, that was not the question. Do I have to show the bank book to imigration 3 months after extension like in Pattaya or is a yearly statement at then next extension sufficient?