I want to apply for an exit visa for a trip in December.  I haven't bought any flight tickets yet.  But I've got to go to Chaeng Wattana anyway in a day or two (for my 90 day report-in).

 

When I fill-in the form - how crucial is it that my departure and return dates on the form tally with the dates I ACTUALLY travel?  I read a comment on another topic that suggested they don't need to be exact.

 

If I do need to be exact?... Has anyone got their exit visa from the Airport on the way out?... How much is it?  How long does it take to process?  Anything I need to know?

Let me guess: "exit visa" = re-entry permit (TM 8)?

Thailand does not have exit visas. You do not need anything to leave the country from immigration.

I assume you may be asking about re-entry permit to keep your permit to stay valid when you enter the country after a trip out of the country.

The dates on a TM8 application can be any date you want to put as long as the return is before your permit to stay ends.

There are no dates on a re-entry permit stamp other than the date of issue and expiration.

To answer your final questions.

 

The cost at the airport is the same as at your local Immigration, 1,000 baht.

 

I got a re-entry permit at Suvarnabhumi last month. I took with me a completed Form TM8 and a photo. It took about 15 minutes. There were just 2 people ahead of me in the queue.