I got married last week...it took 2hrs in local Ampur....but took nearly 2 months from getting my affidavit... must have been Ampur about 5 times...each time received more paperwork to fill in...cost was 150bht...plus 4000 bht for getting affidavit and my passport translated with the 'green stamp' .
Next step getting the marriage paperwork translated..
I just did the extension in Chaiyaphum.. I needed to take my GF with her house blue book.. And she needed to be there.... Plus 1st I went to Khon Kaen immigration and because I stay in chaiyaphum they would not do it there.. 2 days of driving about...