It's beautiful at Christmas I love it.

Small tip, I would do Osborne lights on an EMH night. Not so crowded. We usually go on an EMH night and we didn't this last year (actually went on a Saturday night around 7 pm). What a mistake that was. There were so many people you couldn't move. Literally.
We went back the next night, which was an EMH night, and there was nobody there. It's so nice. You can relax, walk around, takes pictures... all at your leisure.
Anyway, just a suggestion.