I thought I was the only one who used that hack! I carry the cane in my cabin baggage and when I get to immigration I also show my Australian Seniors Card (you can get one at 55 years of age), so although I'm way short of 70, I get waved to the priority queue!
Yep. I'll go with that. Last entry was so easy through immigration, was about the first to the luggage carousel. Over half an hour later my bag arrived
Australian pension is not taxed, but yes, DTA allows taxation only in Australia. Therefore, I have no assessable income in Thailand and not required to submit tax return