Got a walk-in Pfizer booster today. I've had 2 previous Pfizer vaccines in US and the last one the 7th of May. So it was time to get booster and thought I would have trouble finding one. Wife found out about the walk in and she found the other posting while we were there! Hope this helps everyone...not a walk-in but you can register here...If it's time for booster and you are sickly try here. Good luck!
TLDR : Answer Summary
The user successfully received a walk-in booster dose of the Pfizer vaccine in Thailand. They had two previous Pfizer shots in the US and found the process easier than expected, thanks to their wife's research on available walk-in options. They shared this experience to assist others who might be seeking booster vaccinations.