Can I enter Thailand on a visa exemption and later apply for a non-immigrant marriage visa?

The question revolves around whether one can initially enter Thailand on a visa exemption and subsequently change it to a non-immigrant marriage visa (Non-O). The answers provided suggest considering a tourist visa instead, as it allows more time for documentation and preparations necessary for the marriage and visa application process. There are suggestions that changing from a visa exemption directly to a Non-O may not be typically accepted by immigration offices.