Yes, l registered with Bangkok Hospital Khon Kaen, confirmation came back immediately. About a week later l received an email giving details of vaccination. This was for Sunday 5th at 2.00 to 4.00pm at Central Plaza, level 5, Khon Kaen. Received Pfizer and a follow up booking for second shot on the 26th September, also Pfizer. All went smoothly, no queues, plenty of staff and even entertainment provided while waiting the mandatory 30 minutes after vaccination. I am in the over 60's group, no health issues.