I asked my sister who lives in Virginia, about a visa. She told me that her husband be handled everything. She was waiting for an interview at the embassy, and that is the last step. Her husband went to visit her. Just 10 days, And he had prepared the documents comes everything that she must be signed. He sought information prior to coming to Thailand. He takes what documents for visas. When he go back, he filed a document immediately, Therefore, you should talk to the agency before you come to Thailand.