Hi all. big shoutout to everyone here for all their advice preparing my application for conversion from tourist visa to non-immigrant O (retirement) - in particular a HUGE thank you James Miller and Tod Daniels for all the time you took to answer my naive questions. After two visits to the Samui office (they asked me to come back with a medical certificate?!) and visit to my home yesterday by immigration officials to confirm my residence, I think I am home free. Been told to return in two weeks to pick up my visa. I know many people have had varying experiences with the Samui office when applying without an agent, but everyone i dealt with was helpful and friendly - including the immigration officials visiting my home.