My wife is Thai and also from Nakhon Si Thammarat and retirement married to Thai wife is visa I will go with as stated by prior comment.
My wife is there and we started building home on family land there last Oct. in Pho Sadat. I came back in Nov. And wife went back to finish construction and hope to join her in July.
we went though that and also my wife's purse was stolen at place she works so she had everything, green card, FL driver's license, credit cards and money. We notified them and after a year or so they send letter that we need to pay for redoing green card which was chump change.
My wife is Thai and I am a USA citizen and I started the fiance visa in the USA in October 2013 and she reported to Thai embassy for interview in May 2014 and was approved and she came into the states on June 24th and we had to marry within 90 days of her arrival. Was not too difficult and think around 680 USDollars if I recall correctlly.
I used to send with Western Union and found that Money Gram has a better rate. Have not sent in awhile as my wife is here in America and we paid her house off so no need to send every month now.