..yes, especially since, during the summer, it gets dark later in the evening....
We were at WDW in Nov 2001. You didn't mind the earlier hours so much since it was dark by 5-5:30 PM. But if it stays laght out until 8:30-9:00PM, you want to stay in one of the parks a little later, too. How about Universal and SeaWorld...what kind of hours do they have???