Belle,
You should have no problems getting the Song of the South pin. It is a release of 5,000 which means it will be available in large quantities at almost every pin cart on the property. No need to get up early and stand in any line.
Other pins which come out while you are there that should be easy to get are the Beauty and the Beast 10th Anniversary pin and the #1 pin from the new Cartoon Series. These should also be sold property wide. Food and Wine Festival pins should be easy to get, although they are only sold at Epcot. If you get to town on November 11th, you might want to check out Downtown Disney. The Festival of the Masters runs through that date and they might have the logo pin left.
Of course, you should keep your eyes and ears open in case a Mystery Pin makes an appearance, and you MUST stop at the pin cart at the Boardwalk and introduce yourself to Leighton, the CM who is usually manning the cart. He takes very good care of DIS members and will make sure you make the most of your week pin-wise.
Wish I was going to!
Have fun,
Cynthia