Hi, Lloyd! My best suggestion to you is to try early in the morning when cancellations from the previous day are released. You can start as early as 6:00 a.m. EST on-line and 7:00 a.m. E.S.T. by phone. Try a few times before your trip, and if still no luck, check at your resort when you check-in to see if they can help secure any reservations for you.
Be flexible with your times, and as soon as you see something, grab it before someone else does! For more tips on getting Advance Dining Reservations, read an answer
HERE that I gave to another Disney guest.
Finally, make sure you are checking ALL the available character dining experiences! Don't forget to check Tusker House in the Animal Kingdom (breakfast with Donald, Daisy and pals), breakfast at Cape May Cafe in the Beach Club with Goofy, Chip and Dale and pals, and the Crystal Palace in the Magic Kingdom where you can dine with silly old Winnie the Pooh! For a complete list of character dining locations, go to
www.allears.net and search Character Dining.
Good luck! I hope you have some great dining experiences during your WDW vacation!