Hi,
My family went last year for christmas Dec 22 to 28....It really didn't seem to crowded until christmas day, then it was a mad house.....I read on another thread some where on here that they were afraid that this year might even be busier because christmas lands on a saturday.....As for the christmas parade they have them through out the day but at night they have a different parade it's not a holiday parade i can't remember what it was called...On main st at night they have snow falling from the roof tops it's beautiful and the decorations are beautiful.....As for the weather my family dressed in layers and we carried around a back pack to carry sweater.....In the morning it was really cold by eleven it warm up but then around five or so it was getting cold again....The weather there is unpredictable.....Make sure if you plan on having christmas dinner some where in WDW you make ps, we had ps for the 50's Prime Time it was so crowded that we had to wait atleast 45 minutes and that's with a ps....