However, the more salient issue before even crossing multiple hypothetical bridges are:
With a valid DTV which is Multiple Entry and valid for 5 Years, how demanding will the local Thai Immigration Office in Thailand be in converting your DTV to a Non-B Visa?
Will a Thai Immigration Office even convert a DTV Visa in-country to a Non-B Visa and question the initial underlying justifications submitted with the initial DTV Visa application?
However, the more likely scenario will be: How demanding will the Thai Embassy/Consulate be in cancelling a DTV Visa that is Multiple Entry and Valid for 5 Years and subsequently issuing a Thai E-Visa Non-B Visa?
In this other hypothetical, will a Thai Embassy/Consulate tell the Thai E-Visa applicant to go to the Thai Embassy/Consulate that originally issued the DTV Visa for them to cancel the DTV Visa first and subsequently lodge a Non-B Thai E-Visa application?
Also, will a Thai Embassy/Consulate even cancel a valid DTV Visa and question the initial underlying justifications submitted with the initial DTV Visa application?
on the Thai E-Visa website, you have already selected to submit your Thai E-Visa application to a particular Thai Embassy/Consulate and now want to select a different Thai Embassy/Consulate?
Answer = No!
Also, as your bank card payment has already been processed, remember, there are no refunds....
However, at both "longer established" Thai Embassies/Consulates issuing Thai E-Visa for years and "newer" Thai Embassies/Consulates that have switched over earlier this year to Thai E-Visa's, processing times have improved and shortened, as evidenced by quite a few actual reports by members in this Facebook Group lately....