You may also want to consider an annual pass for at least one person in your family in order to be eligible for an annual pass room rate at one of the Disney resorts. Here is an excerpt from my soon-to-be-released book "The Luxury Guide to Walt Disney World:
Annual Pass: Unlimited access to all four Disney theme parks as well as complimentary parking and an array of discounts for 365 days. If your stay is more than 7 days or you plan to return within the same year, this is the way to go. You may even consider this type of pass for shorter stays simply to receive the great room discounts available for Annual Pass holders; only one person in your party must have an annual pass to obtain the discount. For those who make an annual trip to Disney, plan your return trip a few weeks shy of the expiration date of your pass and your park admission will already be paid.