Hi Hannah,
I love that you will be travelling to the Walt Disney World Resorts for your first holiday. The Saratoga Springs is a great location if you love shopping as Downtown Disney is right next door. It is convenient to grab a bite to eat or shop until you drop:)
You can start booking your Advance Dining Reservations at 180 days from August 2. You can then book the next ten days of your trip. You will have to call back for the last for each day after or simply wait until the last day is up. You really only have to look to book this early for Cinderella's Royal Table, Le Cellier and a few other restaurants.
As for the list of restaurants available, these change as each restaurant is contracted individually to the plan. Here is the
list of the current restaurants and you can look at them about a week prior to booking your trip to see if they are on the list.
Some current favorite buffets are Boma, 1900 Park Fare, Cape May Cafe, Tusker House and Crystal Palace.
Wishing you a magical vacation!
Beth