Hello, which immigration office should I go in BKK for visa exemption extension?

Good day everyone.

I hold an American passport. I came to Thailand via Poitpet/Aranyaprathet, on the 18th of April. My “visa exempt stamp” will expire on the 17 of May (Thai National Holiday “Royal Ploughing Ceremony Day”). I’m located near Seacom Square Srinakarin shopping mall.

Due to a recent surgery I must remain in Thailand. I tried booking on line at the “Laksi IT Square” office, but there are not openings.

My questions are:

a) Can I just show up at “Laksi IT Square” without a pre appointment on the 16 of May 2023?

b) What exactly is needed regarding the 1900Bahts cash fee, plastic tape, glue stick, clips, pen, staples, copies of what, photos size color, etc, to apply for the extension.?

c) will I get 30 or 60 days extension?

d) Any tips or further recommendations?

Thank you for you help.

Appreciate and thanks to the group over here that give accurate information and advice. Just successful done my 30 days extension in laksi I.T Square.

Take me around 8 mins to get my extension 30 days stamp.

Advice to go early, I reach the mall at 8:20am and my queue number is 10. Everything went fast and smoothly.

The immigration only issues 200 queue cards per day.

Thanks again 🙏🙏

Anyone know if I can apply for a TM30 at Laksi IT Square when getting my visa exempt extension? Also what do I need to give to the official for a TM30? My landlord has given me a copy of my apartment contract. Thanks for any help.

Does anybody have a working contact phone number for Immigration Division 1 Laksi IT square?

Every number I find is invalid or out of date.

Thanks