Hi Yolonda,
You are so close to your vacation and you must be excited!
Old Key West is the original Disney Vacation Club property. This resort is designed with a neighborhood feel-your home away from home. There are cul de sacs and the buildings remind me of townhouses and not a resort. I love the main pool and the rooms are bigger here. In addition, this resort has some of the lowest points to rent which is nice if you want to squeeze in another trip to Disney:)
Saratoga Springs Spa and Resort is one of the newest vacation club properties. This property is set on the banks of Downtown Disney which is home to great shopping and dining. I also love the quiet pools because there are laundry facilities and barbecues poolside which makes it easy to combine "chores" while on vacation.
If you are planning on returning daily for the afternoon swim or nap, I would choose Old Key West because it is slightly more central to the theme parks.
If shopping and night time activities are your thing, Saratoga really is a great location.
You can also continue to call Member Services up to your arrival date to see if anything is available at another resort.
Wising you a magical vacation!
Beth