What is the process for obtaining a re-entry permit at Suvarnabhumi Airport?

Re-entry permit at Suvarnabhumi Airport status update: All as usual

Be prepared to have passport (obviously) and real paper boarding pass from airline counter, they will ask for it.

Re-entry counter at Exit number 2 (ONLY), after security check go down small escalator then to right to far end of border control room (where counter located).

Counter opened 24 hrs. I was there at 5 AM.

Cost 1200 for single, and 4000 for multiple re-entry.

200 THB is a service fee, and receipt given separately with standard immigration receipt.

There will be a handwritten number like xxxxxx / 62 in reentry stamp, this is a "VISA number" which you need to note in arrival card on return, there is special field for this in the card.