I filed my 90-day at CW a couple of weeks ago. No TM30 required if I remain at the same address. You will need a TM30 to get a 1 year extension. I am doing something similar this month. I will go and return from the US and get a new TM30 upon my return. I have one unreported trip to Pattaya so I expect I may be fined for that when I go for my 1 year extension in October.
Rodd Miller The O-A Visa is a long stay multiple entry visa. Nothing has changed about this visa. Earlier in the year there’re was much discussion about a health insurance requirement but it has never come to pass. There are a bunch of requirements to get it but it is what you want to get if you are over 50 years old.
You could try to get an O-A visa from the US. However you cannot work inside Thailand for the one year term of the visa. Look at the requirements on the Los Angeles Thai Consulate website.