Id recommend that you start early (5am ish). By noon there is an hour wait to climb the cables (see pics, it was just like that when we went). Nothing takes the wind out of your sails on a pretty day in the outdoors like standing in line!
"So I was sitting in my cubicle today, and I realized, ever since I started working, every single day of my life has been worse than the day before it. So that means that every single day that you see me, that's on the worst day of my life."
--Peter Gibbons (Office Space)