This is the most accurate statement in this thread. In the early summer fo 2007, I did a mini-Midwest trip as a graduation present. We did HW, PKI, GL, CP and MiA. All of the parks were completely empty (even HW on a Saturday and PKI on a Sunday) except for CP. We were there during the week (Tuesday and Wednesday), and it was completely packed.
In one day (9am-10pm, we stayed on park), I only got 14 rides in (including flats). MF was 1.5 to 2 hours, Maverick was 2 hours, TTD was 1.5 hours, and Raptor had it's entire queue full and was spilling out onto the midway (which is over 1.5 hours I'm sure). This was the last week of May/first week of June, and not during any special events. It was just ridiculous, and pretty much put me off from visiting CP anytime in the near future.
Don't get me wrong, I like the park (I've been 4 times), but the lines are insane when you compare it to other places.