Pros:
The nine holes and short-drives make this a perfect go-and-throw course if you have a half-hour or so. The mature trees are spaced apart, but still can pose a challenge. The concrete pads are great, but sometimes point the wrong way (see Cons).
The course is in the back 2/3 of the park and most non-DGers stay in the front 1/3 where the playground equipment is, so most days, the only people to worry about are the other golfers. I don't think I've ever played when there weren't at least one group ahead and one group behind me.
Cons:
Because the course is so old, some of the holes have been moved from their original location, so the concrete tee pads sometimes point in a different direction than the hole, giving you a shortened pad to throw from.
Very flat, so no hills or valleys for variety. The ground is extremely hard, especially in the 10-15 feet around the holes, so a disc that might drop and stop at another course will skip, roll and slide here for several feet. In addition to the ground being hard, it is made up of fine dust which sticks to discs and can interfere with your grip, so bring along a towel and use it frequently.
The signage desperately needs updating and I suspect that the distances aren't accurate, especially on the holes that have been moved.
The park is surrounded closely by homes, but only one hole (#7) poses a real threat of a disc being thrown into a yard, as long as you're not WAY off on a drive.
Other Thoughts:
The short holes make for great potential birdies and can give you a real boost of confidence.
If you need short-course practice, this is a great place to go.