It's not that bad. Yesterday we arrived to what looked like a HUGE mass of humanity, but got in line on the side entry gate closest to Downtown Disney and were in the gates in under 10 minutes. I would suggest avoiding the center turnstiles. They opened the gates an hour early yesterday (a non magic morning weekday). When we returned at 9:05 (we left the park to get a better cell signal), we walked right in, so it appears everyone who was in line got in easily.