I live in Chiang Mai and have often met the 65K requirement by transferring various amounts that total 65K during the month. It is never been an issue. Whether you transfer everything out one day or on several different dates differing each month has also never been an issue here.
in all the years that I’ve been using the income method to support my retirement visa, not once have I been asked to produce evidence that it came from a pension. The immigration office only asks for a bank statement from a Thai bank that the transfer into the country was from foreign source. Whether it comes from a pension or not is only relevant to its taxability, which is not an immigration issue.
That is not correct. As long as it derives from an overseas source it meets the requirement for the retirement visa. However, money from a foreign pension can be tax exempt under Thai tax laws, which may be the context in which you heard something about pensions.
Before I secured my retirement visa, I would sometimes be asked at the ticket counter for the nature of my visa and my onward travel plans. Airlines are responsible for the cost of returning a passenger who is turned away at the Thai border for not having travel plans consistent with their visa. I used to take the precaution of buying faux ticket from places online that sells such things for about $10. Just Google something like “onward travel” and you’ll find plenty of them. I never had a problem using them.
In the event your airline requires such documentation, it’s easy enough to buy an onward ticket for only $5 to $10 that does the trick. I’ve used the service of these online vendors in the past without problem. Just Google something like “onward travel” and you’ll find various businesses that sell you a ticket that passes muster but that you simply cannot use.
Proof of onward traveler easy. If you don’t already have such a thing, You can get temporary but perfectly valid tickets from various websites for a few dollars. Just google onward travel and you will locate them.