On my 51" the delivery guys tore off the cardboard before I could tell them not to. (The ceiling is low so the alternative would have been carrying it back out through the patio door or tilting it on it's side.)
It was only after they left that I realised it also needed to be lifted out of the tray at the bottom. Because of the bulkiness of the set this was a two-person job, but although the set is not very heavy, it was to heavy for my wife, so I had to wait for the neigbour to come home and lend a hand.
I did look at whether it could be rolled out, but it would have meant tearing the cardboard sidewall of the tray, which was about four layers of cardboard thick, and I still wanted to preserve the packaging as much as possible. (I was think the main part of the box could be stuck back together with tape if I needed it.)