Pre-covid, visa-exempt entry was technically allowed only a certain number of times within a given ninety day (or was it six-month?) window. What are the current constraints? TIA.
TLDR : Answer Summary
Currently, there are technically no limits on the number of visa-exempt entries into Thailand; however, at land borders, you are limited to two entries per calendar year. For air entries, while there is no specific known limit, travelers might face scrutiny or denial of entry if found to be avoiding obtaining a valid long-term visa.