I was there last year during this time. If they offer free dining, the beginning of your stay might be a little crowded; and at the end of your stay you're getting close to Columbus Day, so the weekend will be really crowded (we stayed away from Epcot the Sat/Sun before Columbus Day and overheard castmembers talking about how crowded it was.)
The weather was great (shorts and tank tops with only one day of rain).
We'll see you there! We are honeymooning that week as well!