Hello,
I bought the advent calendar 6625 the other day, and thought I would give it a short review.
It is wrapped in cardboard and can slide out of it. On the backside it has flip to pin it on the wall. The calendar itself comes pre-prepared, all the stuff is already put into suitable plastic boxes, entered by opening the hatch for the day. So no assembly of the calendar itself is required, which I think was nice. The playmoparts are of course packed in plastic bags, and must be assembly – as usual.