Bring a book. For Christmas solo trips, I love to take pictures-trees, ornaments, resorts, panoramas, characters, the castle. I actually prefer my Holiday trip solo so I don't have anyone complaining that I'm taking too long to take too many pictures. If you don't care to read, you can bring a notebook to journal. It does, however get difficult to read or journal once it gets dark.
I generally eat QS for my solo trips, but that's just because I personally would feel uncomfortable solo at a TS. I think I tend to graze more as well, so I can browse and munch, rather than sitting and eating.