OP, were you able to do a walk-in in Chiang Mai. I am having problems with an Australian visa for my wife. The website will not let me sign in to make an appointment. @Purdey gave me the email above but have not received a reply. We would normally go to Bangkok and need to coordinate the appointment with flights from Phitsanulok, but morning flights are restricted now, and do not want to go without the appointment. The option is to drive to Chiang Mai if they accept walk-ins.