Can't speak to refrigerated.
But with LTL, we use lift-gates sometimes. It can be very hard work, when you have a resident who has a 1200+ lb. shipment they want in a specific place and you have to say no. Or have a shipper\receiver who won't drive in the trailer or box truck because it has a lift-gate.
Or have a consignee who has no way to get their shipment off the truck without breaking it down, if that's even possible. Because we do see shipments of farm equipment and other heavy equipment pieces that can weight in the thousands of pounds range and their is no way to break it down.