I just completed my first 90 check in today at 8.30am. I am in Pattaya and visited Jomtien immigration office. I completed my TM47 at the office across from immigration and was second in line for the 90 day check in. They processed mine on the spot and was by far the easiest immigration process I have ever been through. You need copies of your passport, your real passport and TM30. Thats all
I called the Australian Embassy (Canberra) and spoke to them as a follow up to my urgently needed DTV as well. They were very polite and super helpful. I had the visa approved in the next 2 hours after expressing my urgent requirements, because like you I had flights and accommodation booked and did not want to lose money
I donβt plan on becoming a tax resident Marb. I will be doing a border run to Cambodia after 6 months 180 days. I believe this eliminate the requirement for a Thai bank balance and to show proof of income again.