What is the process for converting a tourist visa to a Non-Immigrant O (retirement) visa in Thailand?

My visit to Samut Praken immigration office was a bit different, I arrived with what I thought was all the paperwork till I was asked for my evisa paperwork that I didn't have with me, so I had to go back home and with the help from

@Tod ********

we found a copy on the evisa website where I had applied for it before coming out here. Printed it off and went back on the Monday with everything required, this time everything went smoothly and was only there about min before getting the visa stamped in the passport, I thought it would have been a few days before getting it stamped in my passport but happy days. The only negative feedback was not everyone there seemed to know what you actually need one person says you need this and when getting to the counter they would say not need this but you need something else, made the wife a bit angry, but in the end all done now and got the year stamp now and thanks Todd for the assistance.

so when you go back in 2 weeks you'll get the Non-O visa and a new 90 day stay stamp in your passport THEN when that runs down you go back to get the year extension for 1900 baht (which they'll issue on the spot), then buy a re-entry permit after that and you'll be set for the year (except for 90 day reporting)

And before someone says that there is NO medical certificate required for the Non O Visa as retiree...as well as the one year extension of stay as retired...there are several Thai immigration offices which do require a simple medical certificate of good health. It's easy to get at any local doctors clinic... usual fee of 200 +/- Thai baht.