Hi Jennifer:
What a great treat to your family to take them to Disney World. The basic rule about crowds is that they tend to be heavier when schools are not in session. The week between Christmas and New Years is generally
extremely busy as most schools are not in session and families are on vacation. Indeed, this week may be the busiest during the year. If you have a choice, early January is an excellent time to visit Walt Disney World since schools are generally in session then. If you plan to go in the coming months, you should make
dining reservations as soon as possible, especially if you are trying to visit between Christmas and New Years.
Since your trip is approaching, it may be too late to order the
Disney Vacation Planning DVD, so I would make sure you check out Disney World's
in-depth planning page on planning your first trip, which provides a lot of the same information found on the vacation planning DVD.
Good luck and enjoy your vacation.