Early October weather in Orlando is hard to pin down - it's hurricane season, so that can affect your rain chances quite a bit even though you won't be on the coast. We buy several "dollar store" ponchos, carry one for each of us in our pocket (they're very thin and cheap) and pull those out if it does rain while we're in the park. We throw them away if we see the rain has passed and won't be coming back that day. I suggest lightweight clothes, it has very rarely been cold in the many October trips we've taken, and even then, the cool temps were only in the mornings. I also echo the advice about going to Epcot on a weekday rather than the weekends, the local crowd really impacts Food and Wine then. Drink plenty of water and pick the hottest time of the day to sit down to an air-conditioned meal - people want to save their table service meals for the evening, but we've found that if you spend some time relaxing while you eat lunch, you can avoid higher prices and bigger crowds in the restaurants. Crowds are manageable in October, but definitely take advantage of rope drop touring and using your fastpasses...and if you don't get a fastpass for the "must do" attractions, be sure to get to the park an 30 minutes to an hour BEFORE park opening...it will put you at the front of the pack and you won't waste precious park time waiting in line during the day! Have fun and enjoy every minute!