The week of Veteran's Day (11/11) can be somewhat crowded; it's referred to as "Jersey Week" because NJ schools are closed a few days and a large number of people travel to WDW. My family has gone several times in Nov. and found the crowds very manageable. Temps are not bad, but we bring sweaters for the evening in case it cools off. We've been swimming then, too. WDW now has the EMH program so various parks stay open later each day. I think its a great time to go (after Vet's Day, but before Thanksgiving).