Once you get the case number from the NVC( call on Friday nights is the best, around 10pm eastern time, they are open to midnight, and you can get thru within 30 min. at that time of night. Have your name, fiancees name, and birthdate, and they are pretty helpful and can give you a estimate when the case number will be ready after your first call. But, call once a week until you can find out when it will be ready, you want the case number, and invoice number if they have it, you can track the status, and once it says ready, you can pay the fees, and schedule the medical and interview. Medical is an easy schedule by phone, and the interview isn't too bad if you check a few times a day, you should be able to snag one quickly. You can go to the US embassy Bangkok webpage and download packet 3 and 4 from the website, I have never seen them send them to anyone. Download them now, so you are ready with what you need. They are available in Thai and English. Go to Bumbgad Hospital as it is the cheapest out of your 2 options, and easy to schedule there. I butchered the hospital name, but you will know what one it is. If your fiancee hasn't gotten any of the required vaccines, hit the Snake Farm in Bangkok ( Red Cross). they are cheaper than the hospital.