I wouldnt book through travelocity. several reasons, the main reason is if you book disney you can book packages that in the long run will make the cost a lot more effective. In that you can customize your package for example you may need 5 nights but only a 3 day ticket. You can also add the meal plan. the cast members are extremely helpful.
One of the biggest and most helpful reasons is if disney offers a better special than what you are booked under ... you can actually call them up and get a refund for the difference. and, if you need to cancel it is easy to cancel a reservation.
It is a lot of fun to talk to a live disney cast member on the phone. the magic begins as soon as you pick that phone up.