Meh, you get what you get when you come to a theme park on a weekend where the weather hardly gets above freezing. That was very abnormal weather for us... I think they probably would have been better off just calling the whole weekend off. I'm impressed that 3100 people showed up on the coldest day of the year.
If this was just some random day and a big show was closed without warning, it might be a different story.
Edit: Doh! I see now that you said Friday, I thought you were talking about Saturday. That is weird then... usually they are more up front about these things in normal conditions.