We are going for 2 days January 7 & 8th with our 2 kids (aged 13 & 10) and they have never been before. We are trying to decide whether to stay on site. The main reason we would would be to get the express pass and the extra hour at Harry Potter. Will having the express pass make a big difference that time of year? How much time in line would they save us? What are the crowds like in January? Thanks for your help.