The wife decided over the holidays that she wanted to see the Harry Potter's World exhibit at Orlando's Universal Studios theme park. We made the mistake of listening to the guy who said "go there after 3:00 - the crowds will have thinned out by then."
Thanks to this advice we didn't get in until 8:30 - and the main ride had a two-hour wait. We did have dinner there, but it was a bit of a disappointment. I tried to get some pictures, but it was after dark, no flash, and no tripod, so most of my shots are too fuzzy to use. The one's here have generally been post-processed quite a bit, and the two daylight shots were taken when we found out that we weren't going to get in at three.
Probably for atmosphere. Remember that most of the stories take place during the school year, so a lot of the kid's visits to Hogsmeade is during the winter.
Of course it could almost have been real snow when we visited. We managed to follow a cold front, so the day started in the mid-30's while we were visiting.