Whenever we've moved, we've always done our own unpacking and it usually takes us weeks to get it all completed. In fact, we still have a few boxes in one closest that are still waiting to be opened from our last move. So when a friend said that she'd hired an unpacking service for her last move, I understood perfectly why she did. Within a day her house was completely unpacked and looked like it had been lived in for a lot longer than that.
Each company is different, so it's best to inquire about their full range of services. Most will include the following: