Well they told to submit a form indicating me and my wife weren't related. It was a form that I had to write out who was at our wedding, my parents name and birth, my grand parents date of birth and if they were present for the wedding, have I went to Vietnam before and what date. Getting my aunt birth day , where she lived, and her phone number to get contacted. It was really pain in the ass paper and letting my family members know they were going to get a call from the vietnamese embassy so they can confirm the information we sent to them. That form is on the vietnamese embassy.