October in Walt Disney World is moderately crowded at the beginning of the month, busier in the middle and then lower crowds nearing the end. Disney boasts a few special events in October including Mickey’s Not So Scary Halloween Party which takes place on various nights in Magic Kingdom. This is a ticketed event in Magic Kingdom which means the park is only available to those who have purchased this additional ticket. This event does draw larger crowds, so you may want to plan your trip earlier in the day or on a day that the event is not scheduled.
Even though it’s Fall, Florida can still be rather hot during the day, so it is still important to take breaks and drink lots of water!