Hi Karen,
Your Walt Disney World vacation is just around the corner. You must be getting excited, and I'm sure a little eager to solidify some plans!
Although you can wait to see if
Magic Kingdom becomes available for the date you want, and people do end up cancelling, there are other guests who probably have their fingers crossed waiting for the same thing to happen. If there is another date during your vacation where Magic Kingdom is available, I would go ahead and plan on making a reservation for that date. Looking at the
Theme Park Reservation Availability calendar it does seem like park reservations are slowly starting to fill up during that week. This probably isn't the answer you were hoping for, but I'm sure you'll feel better knowing that you'll get to visit Magic Kingdom during your trip, rather than hoping for some extra pixie dust to make the park available on the date that you originally wanted.
Did you add the
Park Hopper Option to your tickets? That's another way to get to visit Magic Kingdom during your stay. As long as you start your day in the park where you have a reservation, at 2:00 PM (or whenever park hopping begins) you can head to any other park, no reservations required. Of course, there is always the possibility that the park you want to hop to is at capacity and not allowing park hopping, but those instances are rare.
Hope this helps. Enjoy your visit to
The World's Most Magical Celebration!
Diane