What are the rules for re-entering Thailand on a visa exempt status during the current situation?

As of now, re-entering Thailand on a visa-exempt basis is influenced by the current health situation and applicable regulations. The duration you need to leave Thailand depends on the entry scheme you choose, such as the Test and Go option, which requires a stay in eligible countries for at least 21 days prior and mandates testing upon arrival. However, if you opt for other schemes, there may not be a required time out of the country, though you will have to undergo a Sandbox or Alternative Quarantine upon return. Historically, there were no strict limits on how long one needed to be out of Thailand before returning, but this may vary based on the immigration officer's discretion.