May I just suggest you go online at Disney reservations on weekends and keep checking Sci Fi every now and then close, especially close to your departure date. There seems to be a lot of action with reservations at the time. A few weeks before my trip which I just came back from, I realized that I booked the coveted California Grill on the wrong night. I was horrified. I called immediately and found that they had a 5:30. I took it but wanting to see the fireworks, this didn't sit well with me! So the following Saturday I checked now and then (kept the page open and just hit check availability). I ended up changing 3 times, each time something popped up a little closer to my time (and then was promptly gone) Sunday morning, right before church I did it one last time, not satisfied with 7:15 and sure enough, a 7:20 which was my original time, popped up. I grabbed it. POint is, people do a lot of changing on weekends so don't give up hope. I would try to secure a seat rather than leave it to chance. Good luck.