I think it's worth checking with your new immigration office first. I had to complete a form when I moved, before doing the 90 day report. I am the same as you in that I use the online system before and after the move, so it should be okay.
I went to the Bkk Bank in SriRacha to ask about the 800k documents and they did them immediately. It took about 5 to 10 minutes. I then went to immigration and was finished there about 30 minutes later.
I mentioned the ATM thing because everyone should know this as they travel around Thailand as it saves money and is superb (it's also the reason some people move banks)
Seems like everything else here, it depends on which branch and the person you see. I was told I could not transfer my account at the new branch, so I just changed my address.
You don't ever need to pay ATM fees wherever you go in Thailand, if you use the 'cardless withdrawal' method using your phone app. It's really simple and works perfectly. I use it all over Thailand and it saves me having to carry the bank card as well as saving the fees.
I didn't realise that. When i changed province the local Bkk bank didn't hesitate to issue my documents, i was lucky. I would check with the bank first, as changing bank accounts could screw up the visa process. Much easier to just keep your original account.
you can drive for 3 months with a licence from your home country and an international driving permit. You are a tourist for up to 3 months. After that you need a Thai driving licence as you will no longer be viewed as a tourist.