Pros:
This course lets you see the vast majority of the beautiful property of Camp Allen. It's challenging, but not (for the most part) unfair. The red tees are incredibly easy (designed for young campers), and the blue tees are pretty fun. Par is reasonable, and about every hole is birdie-able, even ace-able on many.
I love courses that are more technical without being frustrating. This is one of those. Even if you end up off the fairway, you could still have a shot, or at least an easy out.
Navigation is fairly straightforward with a few signs to help you out on the longer walks.
There's so much variety in the holes, you'll get a chance to work on almost every aspect of your game. From long drives, to spike hyzers, long uphill or downhill, be prepared to flex your whole arsenal.
Cons:
Some of the holes through the woods are just congested with trees. Knocking a few out on holes 14, the beginning of 15, 19 and 20, would open up some great shots.
Some of the wooded holes are also just overgrown from lack of traffic.
Hole 12 goes by some private residences, and their cars are pretty close to where you're throwing.
Along the same vein, a couple holes go through a big park. If it's in use, there is an obvious hazard when playing.
Other Thoughts:
Camp Allen is a private church camp, that usually has a lot going on. If you go to play the course, check in at the front desk out of courtesy, and you won't have any problems after that. During the summer though, The only time you may get to play is on Saturday afternoon between camp sessions.
I have played this course more times than I have kept track of, and would play it again every day. It helped sharpen my game, and showed me exactly what I had to work on.
UPDATE: After expanding my course repertoire, and playing this course again a few times, it is a lot shorter than I remember, and has really overgrown. The tees are also much worse, as in just soft dirt. Pretty much actual sandboxes. Still love this course, and hold it dear, so I still give it a solid 2.5