How quickly can I get an METV visa from Australia before traveling to Thailand?

Jason, if this helps...I'm British..I was on holiday at my daughter's (Sunshine Coast) turned up at Brisbane Consulate for a SETV. Got there at 10 ish, young lady checked all paperwork and said come back after 13.00, it'll be ready. That caused some rapid changes of plan....I was supposed to be babysitting the grandkids that afternoon. Shortly after 13.00 I turned up, third in informal queue and same young lady came out of her office with the passports, into the small foyer and dished them out to us. It's on this Group, probably many times, but do check what the Immigration Officer has done BEFORE you leave his desk....he hadn't seen my Visa and just stamped me in for 30 days.

@Ja***

you show up, turn in your documents, passport, pay the money, and you come back the next day to pick up your passport. That's the fastest they do it IF you have all the documentation required.