Loaning money in a thai family is not a loan it's a gift. Surprised he has not threatened to get your marriage visa annulled and have you kicked out of the country.
Just keep your boarding pass. Last time I left it seat pocket in error. Was asked for it at passport control and the immigration agent gave me alot of grief on not having it. We provided my wife's boarding pass and he stamped my passport and a lot grumbling in Thai to my wife. It was a first in regards to asking for boarding pass. But now I know.
Evil squat toilet. Either stepping, slipping or missing the mark. Had food poisoning once and just sat on it. Didn't care. The big upgrade is the kids toy bucket with water to clean with.