Hi everyone, my initial tourist visa (60 days + 30 days of extension) expires on the 1st September and I want to apply for the regular 30 days extension in Bangkok.

Do I have to go in advance to the Chaeng Wattana office (when exactly?)?

Do I need to book a plane ticket at the end of September to prove them I'll get out of the country by the end of the extension?

Also, they ask for a passeport photo; is it enough if it's printed or should I go have my photo taken somewhere (where?)?

Thank you very much, these procedures are really confusing to me!