I wonder what they mean with this"Financial evidence e.g. bank statements, proof of earnings" because it don't say at the website from the embassy what you must proof for earnings. Does it has to be the proof of a hole year or some months?
But you must show the funds in your country as wel when you ask for a 90 day single entry Non-Immigrant Visa based on marriage. Is it not beter to ask for a tourist visa and then work your way out in Thailand?