Some Thai embassies only allow residents to apply, including South Korea. However, one or two people on this page have stated they were able to do so as a tourist (I can't verify how true that is though). As a tourist, you are not a resident.
- As you know there are always exceptions, but there have been multiple accounts where embassies have not accepted one’s business bank statement, even when it is their own company, etc. Just giving you an FYI, and not looking to debate. Maybe it works for you, but if not, you can’t play ignorant.