Can a UK citizen apply for a METV visa in Vietnam if not a resident?

A UK citizen inquires about the possibility of applying for a METV visa in Vietnam while not being a resident or citizen of Vietnam. The post highlights confusion about application procedures, especially regarding whether this can be done from Vietnam or if the applicant must return to the UK. Various comments provide insight into visa types, the importance of applying from the correct country, and the requirements involved. Notably, some comments mention the need for proof of residency and question the necessity of travel during the application.