How refreshing, this post was not done anonymously. Good on you Valerie and may your marriage be filled with joy, happiness and love for the rest of your lives.
Even if you call the airline and they say it’s ok, the person at the airport check-in may or may not require an onward ticket. Then it’s too late to say “but when I called customer service they said it was okay “.
Thailand has no ability to check your driving record in your home country. There is no concept of “clean international license”. The IDP is nothing more than a document that cannot be verified and not registered with any government agency.
So even the worst driver with an IDP is the same as you.