You can most likely get a free visa exemption for 60 days on arrival, unless you come from a country that is not on the list of over 90 countries that are approved by Thailand for the exemption. Just google "Thai visa exemption" and hopefully find your country on the list. 🙏
When you arrive, if the dtv is still not approved, they will get a visa exemption, not a visa, like most tourists. When the dtv is approved, I think they might have to do a border bounce to activate it.