My wife is Thai, we plan on visiting family for 3 1/2 months. I am a U.S. citizen. What is the simplest way for me to stay in Thailand for this duration? I don’t mind traveling to other countries for extensions. Thanks in advance.
TLDR : Answer Summary
To stay in Thailand for 3 1/2 months as a U.S. citizen married to a Thai citizen, you can start with a visa exempt entry that allows for 45 days, then extend your stay by applying for a 30-day extension for 1,900 baht. After that, you can exit the country and re-enter for another 45 days. Alternatively, if you have documentation proving your marriage, you can directly apply for a Single Entry Non-Immigrant O visa to get 90 days on entry and a 60-day extension based on visiting a Thai family, totaling approximately 150 days without visa runs.