We've been 3 times in Oct. Twice the first week. We were just there this past year from Sept. 30-Oct. 8th. I will say it was busier that when we had been in the past and it was a lot hotter. The times before when we went the weather was great in the 80's with no humidity. However, this past year it was in the mid 90's and was humid. After speaking to a few people from Florida they did say the hotter weather was due to the tropical storm that was there that week. The crowds may have been larger since the food and wine festival was going on and it was the last week for free dining. Two years ago we were there the same week and it was wonderful. I've always said that October was our month because we loved it during that time of the year, however, I've decided to plan our next trip for right after Thankgiving because we would love to see the Christmas decorations.
I would say go for it. I can't say we won't go back in October again.