I am going to go against the grain here so be kind....
I went on my first (and only) solo trip in Dec 2013. I won't do it again. I found that while I had people that I talked to while in line or at meals, I wished my family was there with me. I would see something really cool and interesting and turn to tell them about it, but they weren't there. I found myself taking lots of pictures on my phone and then texting them to my family so they could see what I was doing. I would rather not spend my vacation doing that, but rather sharing it with the people who were on the other end of those texts.
Totally understand - I do take the family every Christmas... Always have had a bucket list of things that I wanted to do but the family wasn't interested in ..
I know a lot of people LOVE solo vacations, and more power to them. I just wanted to give a different point of view from someone who didn't care for my solo trip.
(NOTE - I am glad I went however, because it was the first time seeing Christmas decorations and I can't wait to bring the family with me to see them again!)