Hi, Douglas!
October is a lovely month to visit Walt Disney World! I love the cooler temperatures and the beautiful fall decorations in the Magic Kingdom.
Let me give you an itinerary that I would use if I were visiting on your dates:
Oct 20: Arrival day. Explore resort, visit Downtown Disney for shopping and dinner
Oct 21: Magic Kingdom
Oct 22: Hollywood Studios
Oct 23: Magic Kingdom
Oct 24: Epcot
Oct 25: Animal Kingdom
Oct 26: Time to head home. See Ya Real Soon!
Magic Kingdom will be closing at 7pm on October 21 for Mickey's Not So Scary Halloween Party, so this would be a good night to plan a 7 or 7:30 pm dinner at Chef Mickey's (Contemporary) or Whispering Canyon (Wilderness Lodge). You can stay until park closing then head to dinner.
Look over this schedule, and if you think this will work for you, plan on some dining locations and book your Advance Dining Reservations
HERE. If you need dining suggestions, let us know! Have fun planning your magical vacation.