@truman1012 The email we both received is below. What wasn't clear is to mail them to the address on Washington Street which is in the image of the signature. We flew back to where the prepaid FedEx we purchased at VFS was for, so they used it.
We had a couple who we were on similar timelines with, and they did this first. It took a week for their passports to be returned and so we counted on that and booked a two week stay out of caution. Ours being retuned the same day as it was received has happened to others. They did stamp our effective date to coincide with the return flight we submitted.
We were staying with relatives and happy to see family after a few months. We had contemplated just flying to the East coast and sending in a prepaid return to wherever we decided to vacation but that could have gotten expensive compared to staying with family.
We thought of changing our flights and leaving early but it was good to stay and visit since we have not returned since and it will be 19 months before we finally make it back later this year.
"Your applications for National visas cleared today.
At your soonest convenience, send in your actual passports so the visas can be issued, then affixed inside. You need not appear personally, but do need to be present anywhere in the USA where it can be received back the passports should you have gone abroad in the meanwhile.
These authorizations are valid until May 8th and the return mailers on hand are for Las Vegas. If the return address has changed, with the passports include a newly prepaid domestically addressed mailer as well as a note a travel date into Portugal between now and May 8th.
Allow a few days to turn out the passports once received and for transportation time."