Guys anyone have any experience with this new Apple trade in system?

In the uk when I traded in my phone, they sent a trade in pack to my home for me to put my phone in and then drop it off into a postbox

Here it just says schedule a pick up, which I did for tomorrow, but then doesn’t give any instructions as to how to prepare or give the watch to them?

I don’t have the original box, will any box do??

Finally after almost a month of waiting mine is shipping own

Will share a picture once it arrives hehe