Just wanting to clarify - am on a 60 day Tourist visa which lasts till 16th January - living in Rawai currently - can I go to my local immigration office to get 30day extension? Or do I have to go to Bangkok? And - when's best time to do it before my tourist visa time frame expires? And ( excuse the list) do I need to take a tm30 from my landlord?
TLDR : Answer Summary
You can apply for a 30-day extension of your 60-day Tourist visa at the local immigration office where you are staying, which in your case is in Rawai. You do not need to go to Bangkok. It is advised to apply for the extension when you have 30 days or less left on your visa. Additionally, ensure that your landlord has filed a TM30 for you, as this is necessary for your extension application. In Phuket, there are three offices available for this process, with the main office in Phuket Town being the busiest.