If you are going between 12/1 and 12/17 you can get upto a 20% discount (value season) depending on which resort you pick it may be less, but if you get a pin or other % off from Disney you would be better going with that, also remember if you use a TA you will not be able to do the 90 + 10 with the online dining reservations, you would have to call Disney to be able to do this.