What other documents are needed? I'm in Samui, my landlord has reported my stay. I just want a 30-day extension from my visa-exempt stamp. I'm US citizen also. Thanks!
In BKK on intervac site: Phayathai 2 Hospital was fully booked today, July 12th, by 10:00am when I checked. As for Samitivej Sukhumvit Hospital, fully booked. The next pre-registration will be open in August. This is for 60+ and pre-existing conditions. Under 60? Who knows? months...