Our first order was damaged and Wayfair was quick to get another on its way.  Our second box had minor damage but when we unpacked there were 6 pieces damaged but they were not completely broken.  We decided to see if we could make the best of the damaged pieces as we did not want to wait or repack everything back up.  I am sure the damage happened in shipping but the packing is not great.  The styrofoam is very thin under the cardboard which does not provide much protection.  I would suggest a much thicker cardboard and a double layer of styrofoam.  
I don’t know if Wayfair would replace just the damaged pieces but when you have limited time and every unpacked and laid out to assemble.