So I went with my personal letter from the US embassy to the temp immigration at Muang Thong Thani yesterday and got the under consideration stamp telling me to return on April 23rd. I assume I must return on that specific date and no other and with my receipt as well. Is this correct? Does anyone know anything else I need to do and whether one must go to CW or Muang Thong Thani now? Just so people know, I entered visa exempt and was getting an emergency extension after having used my first extension and being blocked from exiting the country.