Having an AP has saved us about $800 on two visits this past year, on lodging. It has allowed us to stay @ DAKL Savannah view($200 per night), which we would not have done without discounted room. We saved $90 per night at the FW Cabins. The discounts will save you money, or allow you to stay in a resort that is a step up from what you would normally stay in. If you can resist the impulses, do ALL of your shopping in World of Disney downtown and save 10%. You save on car rental, dining, tours, etc. Check out the link that DisneyWorld30th provided and it will explain everything. When reserving a room, it helps to actually have the code that you are trying to use, not just say "passholder discount, please".