What is the difference between the free tourist exemption stamp and the Visa On Arrival, and am I eligible for another extension before the March 25 deadline?

The user is seeking clarification on the distinction between the free tourist exemption stamp and the Visa On Arrival options after arriving from Canada without a visa. They mention having obtained a 30-day extension and a subsequent 60-day COVID extension and are inquiring if they can apply for another 60-day extension before the March 25 deadline. Responses emphasize that they entered Thailand under the visa exemption category, not with a Visa On Arrival, and caution that obtaining additional extensions is not guaranteed and should be supported with a valid reason.