Pros:
With the addition of the holes on the south side (late fall through spring), this might deserve an extra star on the rating (I'm partial to grassy hills, what can I say). The north side can be challenging, some tight shots between trees and a water hazard. Good map, pick one up on the way in.
Cons:
The water looks a little less than appealing if you ever lost one in there. Plan on getting a little dirty on the north side, but if you're into the nature, I'm sure you won't mind.
Other Thoughts:
Plenty of other activities in the park, not just disc golf.