Turbo:
My interview was at 9.50, but we arrived earlier. so we got called for interview earlier. However, when I was waiting in the line to get in, I did saw a couple ( they were in front of me) had to go back to their car to get rid of their camera phone. .. ( is that you?)
I got stamp right after the interview, so I guess they do stamp people on the spot.
DId you have a lawyer? it might be best to consult your lawyer. I have a lawyer who gave me a lot of advise ( cos I kept asking him questions), who also prepared for all the documents for me, however, I decided not to have him go acompany us for the interview.
The two people who did our interview went in the same fashion like what you had, except she did not mention anything about " putting the documents into the envelope". Also, I brought all the origional documents alone with me, and made copies for each on of them. My feeling is that they want to see you are fully prepared ( or even 125% prepared) and you are very very sincere about this interview. COs the lady was only checking the origional documents, and collected all the copies that she needed. My photos are all done by digital camera, the print out quality is really bad!!! but I dont think they care. but we had taken photos with my parents and his relative before, they asked who they are, and I think that was a big help.
I was here on a B2 visa, and I did overstay for a while.. and my husband, when then time we met he was still in a previous relationship. so the officer was very concerned about this part. But I guess I gave her a honet explaination..
Sorry I can not be much helpful..