People may want to start making plans where to stay in the upcoming year. For some, that may be based on how to ensure renewing status at various chains. While most of us can calculate what the rollover should be, many want to be sure their calculations are correct and that everything was calculated the way it should be.
Personally, I have no skin in this particular game. I'm LTP and base my stays on being close to where I need to be in the morning, but I get that others may be anxious to just get everything done.