I have never really much luck shooting Christmas lights, but I was pretty happy with this one. It wasn't as much luck as it was just not getting the look that I wanted. So this year I went to Pinterest and really researched what I wanted to shoot.
With a 50mm lens @ 200 ISO, F-Stop at 1.8, and 1/13 - (Don't forget a tri-pod) this is what I got. Much better than previous attempts, but I spent some time playing around with the settings.
Not quite married yet, and won't be until 2016.