It's not what you think RollrCoastr00... it's a ticket to ride.
If you get there early, and the line stretches like to infinity, then the park partons will give you a ticket so you can leave the line and go only during the time frame that is on the ticket and only wait around a half hour tops for the Millenium Force (noone else was allowed, only people with that specific ticket). This was during the times of 11am to 4pm, I think...
Before that and after those times, it was opened to anyone. That is when the lines get from 2 to 4 hours long.
I'll be all for it this year too since the coaster is still pretty much new and the most popular at Cedar Point still... (in other words, the lines won't be dwindled down from last year all that much). It gives you or anyone at least 1 ride on the Millenium Force without waiting half the day for it!