@Tony *******
Ok. A few errors here. You only need a TM30 if you have any interaction with immigration which under the "frequent traveller" scenario, you'll have none. So you get one from your landlord at some stage. No great rush. 90-day reports are only required if you're in the country for 90 days, and if you are, you do it by mail. I've yet to do one in person. If your immigration office requires TM30, you get it from your landlord, and post a copy with your TM47 form. I'm in and out of Thailand
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times a year and I switched from non-O retirement to DTV. Best thing I ever did. It's cheaper and I don't have to deal with immigration!