Can I pay for a 30-day visa extension after a 30-day stay during the amnesty period in Thailand?

If you insist on handing in the forms and pay the 1.900 Thb application fee, I do thinks the officer will accept and give the stamp Application not approved.

I would ask your immigration office, but expect them to say no.

I'm attaching a graphic from Thai immigration -read section 1. You *MAY BE* able to get another 30 days *IF* you are given a letter from your embassy saying you can not return, *AND* immigration agrees. You can also stay an additional 30 days if you physically can not travel out of Thailand and are seeing a doctor for treatment (requires a doctors letter, etc. I never heard of anyone getting another 30 days though using that method).