Received it on 11/22 and started to assemble it today (11/27) and while letting the lights hang, to make it easier to attach, I noticed a couple of the lights weren't working.  It turned out that a total of 3 didn't work and all blue on different strands and levels.  I was very disappointed as this was going to be a focal point in the family room of my narrow townhouse.  I called and a replacement is being shipped but they want photos of the tiny lights that aren't working and not sure how this is going to play out.  I ordered a piece for my wall several months ago and they shipped me the wrong color and it was no longer available.  I've spent a lot of money at Wayfair and hope that they make this one right.