It's important for one to go to the interview with all necessary documents. I'm saying this in view of the ongoing issue whether they could deny one VISA on the basis of his/ her inability to provide AOS. I would like to say that it's very possible for one to be denied VISA. I know of a Ghanaian (single guy) who was selected for further processing for the DV2006 fiscal year. He had no contact in the U.S. This guy lives abroad as well but not in the U.S. But because he had no contact in the States, he had sought the assistance of some of his trusted friends who promised to use their contacts in the States to get him AOS but failed to fulfill their promises. Eventually, he could not provide the AOS when it was requested on his day of interview. Although he was given sometime to provide it, but when he couldn't provide it he was denied the VISA. So it is important for one to endeavour to have all the required documents prior to the day of his/ her interview. If some single guy out there could be denied a VISA for that reason it stands to reason that it could happen to anybody. That some people have succeeded without must not override the importance of such document to DV applicants. However, so far, I haven't seen where it's mentioned. I don't know if it would mentioned in the second letter. If it's not mentioned, then it stands to reason that it's not a requirement. Otherwise I would advice every DV applicant to get his/ hers ready.