The Meadow course is probably the best course I've ever played, and that's counting over 100 courses in 14 years. It is primarily flat. It is open compared to woodsy courses, but it has lots of trees compared to wide open courses. So I guess somewhere in the middle. Most of the course is fairly protected from the wind.
The Hill course is nearly as good. It is more open, and has much more elevation. It is also more exposed to the wind.
Both courses have several holes where you have to hit a gap off the tee, but the hole itself is pretty open. Other holes let you go off the tee without much accuracy, but you will be punished with an obstructed shot if your disc doesn't end up where it should.
Both courses are incredibly fair length-wise. I think the longest 1-shot hole on either course is about 365 or 380 (and most are much shorter). After that, I don't think there is a hole under 530 or so. So in other words, all the 1-shot holes are very reachable. All the others truly take 2 or 3 shots to get to the pin.
They may have GMs play the white tees, but all of the above should still apply.