Is the re-entry permit counter at Don Meaung airport open early in the morning?

It's open for . The re-entry counter is located along with the overstay fine counter in the small room behind the passport control counters. Tell the officer you need a re-entry permit at passport control. She will give you a direction.

You bring only your passport, they will do forms, copies, photos, then you pay the official fee + 200 baht "service fee'.

You have all the necessary documents, you pay only the official fee.