Just had my 5/7 RT/PRC test at Banglamung Hospital in Pattaya. No appointment required but mornings only. Bring your passport, your pink slip, Thai address & telephone # and you are good to go. No fee and you’d be wise to download and register yourself ahead of time on the LINE Ap. They send your Covid results on between 10hr-3days in THAI and I believe they can track where you are.
Had I had the Ap already installed it wud hv taken a whole 10 min.