The Challenge is almost always a top notch event. It seems that year in and year out since hosting worlds, the club has put on a stellar tournament. The courses are second to none (KC is a close second in my opinion). The four courses used for Pro/Advanced will definitely challenge every shot in your arsenal and probably some you don't have

The players party at Felix N' Oscar's is a good time. They have some of the best pizza I have ever had(Not quite as good as Waldo's down in KC).
Here's a quick breakdown of the courses
Pickard:
Long...and then long again. There are a handful of holes that are under 320, so getting your birdies on those is needed. Beautiful rolling hills, water, some elevation changes, trees and some good op's to air out your plastic. Most of the pro's that have played this course say they love it. This is probably my favorite course to play in the metro area.
Ewing:
This course is a tale of two nine's. The front side it wooded and requires some accuracy to score well. The back nine is where you get to air out your shots. The back nine might look easy at first glance, but once you step up to the hole and have to worry about keeping it in-bounds, it's a whole different ballgame. The course wraps around a lilac arboretum as well.
Walnut Ridge:
The course in tournament layout will definitely challenge you. If you hit your lines, you can shoot under par. A good balance of wooded and open holes. Plays right next to Saylorville lake. There is some good camping to be had within walking distance of this course as well. This course rewards accuracy above distance. Elevation comes into play if you miss the fairway as well. Lots of chances to roll away and down a 100 foot embankment. This is a close second to Pickard on my list for local courses.
Big Creek:
Well, this course has a hole that will drive you absolutely crazy. "The Freak" is a true test to your mental fortitude. If you can keep it together through all 900 ft of this hole, then the rest of the course is a breeze. This course requires accuracy and then more accuracy. There are very few holes that you should use a driver off the tee. I watched a particular MN D'craft Pro tear the course apart last year by playing quite a few buzzz's off the tee's.
Really, all in all, any one of these courses is would be a treat to play a two rounds tourney on. But if you come play the challenge, you get to play all four in their tournament configurations.
And supposedly the man, the myth, the legend...Dan Beto will be in attendance as well.
If the object of disc golf were to hit trees, I'd be 1100 rated.