Hi Folks! Long time lurker, and hope to offer some of our experiences to help out in a few weeks: right now up to our necks in preparations!
Need to check something ASAP, as about to commit to non refundable flights tomorrow......
So, just now panicking that we got everything in the envelope when we picked up my husband's passport. The letter included said TWO documents, so I'm hoping that means your passport and COPR. To be anal, though, when one picks up their passport (and presumably when it is posted too

) the envelope should contain the following:
1) Your passport (with the "immigrant" visa as like a sticker on a whole passport page
2) A letter telling you what to do, and also saying there are TWO documents included
3) The COPR form with your photo on one page, and two additional pages, separated by carbon- it says it's a 3 part from so.....
There is nothing else. right?
Basically all we need for going through Immigration is the passport with the visa, and the COPR 3 part from thing? (And we have our marriage certificate and my husband's birth certificate and ALL of the documents we sent copies of with our application, although I doubt they'll want to see those! ;-))
I know Shandimoo indicated that was all in a helpful previous post (and she mentioned the two lines- if you get there after 2pm they seem to make you join the one line for drop offs and pick ups, so get there early for speediest results!).
Thanks in advance for any confirmation you have