1. Yes. Hell Week is Columbus Day weekend. In the past, it was also the first five day week for scaring. Horror Knights (UCF Night) is different and, this year, will likely not be insanely busy.
2. Maybe? I don't recall the rules on it. They'll be posted at UCF Student Services in the Union.
3. With Friday being UCF night, that will be more crowded. The final night of HHN, unless it's actually Halloween and it falls on a Saturday, is rarely that busy. It's mostly hardcores in attendance and, this week, they'll all be in line for Bill & Ted.