My wife and I are planning to spend 3-4 months every year in Thailand when we retire next year. My wife is a dual citizen (US and Thailand). I am a US citizen. We were married in the US but never registered it in Thailand. We are both over 60. We are financially secure. We have a house in Thailand under my wife’s name. While in Thailand, I may volunteer my time at non-profit organizations. I’d would like to eventually get a Thai permanent residency (or citizenship) so I don’t have to deal with visas and in later years we may decide to live in Thailand full time. What’s the best path for me to get to Thai PR or citizenship?