The crowds should be less than the Columbus day week. I find October (mid to late) to be moderate--pretty much compared to early May. Weekends will be packed at EPCOT as they always are during food and wine -- a favorite of the cast members and locals. The weather is usually great, usually low 80s during the day (as long as hurricanes stay away). We've been going mid to late October for more than 10 years in row.