Since a valid Pcr negative test is required before arriving and then this needs to be uploaded to Thai pass, how long do they take the process ?
TLDR : Answer Summary
Travelers don't need to upload their PCR test results to the Thai Pass; instead, they should print out the results to present them during check-in and upon arrival in Thailand. The PCR test must be taken within 72 hours of departure but does not need to be submitted to the Thai Pass for entry.