Can I cross the border and re-enter Thailand on a tourist visa to extend my non-O spouse visa?

An Australian passport holder with a Non-O spouse visa nearing expiration in Thailand is exploring options for extending their stay. The advice given suggests that re-entering Thailand on a tourist visa after a border run is not straightforward, as obtaining any visa typically requires processing time of 2-3 days at Thai consulates. Additionally, if the individual leaves and re-enters, they may have to restart the visa process completely, which means applying for a new 90-day Non-O visa. While a 60-day extension for visiting Thai family is available if not already used, it's essential to understand the implications of exiting and re-entering without a valid visa.