Piglet,
The first week in Nov is usually called Jersey week. All NJ public schools are closed Thurs and Fri (this year Nov 4 & 5) so a lot of us visit WDW. Our school also schedules teacher conferences, add in Election Day, and DS doesn't miss a day of school for a week's vacation. Except for us this year, we couldn't get a good price on airfare, so he's missing 2 days.
I also think the second weekend in Nov is Soap Opera Weekend and that also has fills up the place.
If we could, I would rather wait later in November to see all the Christmas decorations. They usually start decorating beginning of November on a staggered schedule.
Good luck.