Pros:
I can see where this could be a fun little course for new players or if you're in town nearby. Hole 8 is pretty cool - it has you throwing from the top of a huge sledding hill. Other than that, there's nothing really unique about it.
Cons:
In general, I'm not a big fan of 9 hole courses and when I played, hole 9 wasn't available. The holes really weren't clearly marked. I got lost a few times trying to find the next tee. The 'hole info' page said there are alternate tees, but I didn't see any.
Other Thoughts:
If I'm gonna drive out to Gurnee, I would much rather spend my time at Six Flags Great America. I wouldn't drive too far to play this course.