Last year, we went to WDW for Christmas, visiting from 12/12 to 12/22. From 12/12 until 12/18 it was heaven. On Friday 12/18 the crowds began to flood in, as that was the Friday a week before Christmas and the schools were letting out. The next three days (12/19-12/21) were hellish for us since we are crowd averse, to put it mildly.
We spent the last day 12/22 in DTD so the crowds weren't as big an issue.
In 2010, we have a week off at Thanksgiving and could even sneak out of school a few days early. But I know that the crowds are notoriously BAD. So my question is......Around what day does it begin to get ungodly crowded? It must be before Thursday.....Is it Wed.? Mon.? The Friday before Thanksgiving?
Any info would be appreciated!

In 2010, we have a week off at Thanksgiving and could even sneak out of school a few days early. But I know that the crowds are notoriously BAD. So my question is......Around what day does it begin to get ungodly crowded? It must be before Thursday.....Is it Wed.? Mon.? The Friday before Thanksgiving?
Any info would be appreciated!