This has been a very helpful answer for us. Will we be asked to provide an address for them to send the passport with the visa when it's time, or will they use the CURRENT address that we provide them on the I-864 or DS 260?? If so, I was thinking about attaching/uploading a letter stating that if any mail were to be sent in the process that it be sent to our joint sponsor's mailing address. The reason why I am so worried about this is because we've had a social security card, amongst other things, lost in transit on the way to our current address. Your answers are highly appreciated kind sir.