The resorts will not be decorated yet at that time but MK will be. HS used to be too for Osborne Lights by that time but now that is no longer. Also the MVMCP should start during your dates. The resorts usually are not decorated (like Grand Floridians gingerbread house etc) until 16-21ish each year give or take right before Thanksgiving is usually all done. The Christmas events mostly don't start until the week of Thanksgiving and some there week after Thanksgiving. So those dates you will not see all the wonderful Christmas decorations and offerings yet. But you would catch the Epcot Food and Wine Festival and MVMCP for certain. So I'm not sure how much you will want to experience so it's something to think about.
Our favorite time to enjoy all Christmas decorations and events is the first few weeks of December.