I'm returning a late 2015 MBP and the return label sends it to a location in Houston, TX.
Thanks to so many having shared their experiences, after I wiped the data, I created a new ID solely to be used for validation.
I then made a video showing every side of my device, showed it unplugged and then plugged in to show it charged, typed to show the keyboard worked, used the touch pad, and brought up Siri to ask something to prove that its speakers worked. I finally videoed me putting it in the protective wrapper, then box, and made sure to capture me applying the tape, labels, and the shipment info.
Obviously, a tiny bit of effort but it should ensure clarity if things go awry at some point! Doing it in person would have been ideal, however, I got the box almost a week before I actually got the new MBP and didn’t want to have a failed in-store return because their system stops it!
Could you let us know how your Houstin, TX location trade-in goes? I'm curious about this as well. I have a label for TX as well, but it's not Houston. Thanks!