Pros:
I really like this course because it is quick and quiet, which means I can go out at 4:30pm in the winter, play a round, check out the hill at Granger Meadows, and be back home before dark. A couple of months ago, a group of people got together to clean up the park - no more tires, no more downed trees obstructing the flight paths, and the basket at hole 8 has been replaced. It's a great place to practice your short game and hone your technical skills because it is surrounded by trees. Sure, this can be frustrating to people used to playing in big open areas - but what's the fun in that? The trees make for a fun and interesting challenge.
Hole 4 is a favorite of mine and is probably the one with the best opportunity for a bigger drive (along with hole 1). Hole 8 is pretty short but downhill, and is good for a beginner's first deuce (that's where I got mine!).
Cons:
It can get a little muddy at the tees after the rains, but there is plenty of room to step around the mud. Unfortunately not all of the tees are clearly marked, and the bathrooms at Valley Farms are locked at times (when this happens I take the short walk to Granger Meadows). Sometimes some of the smaller trees topple over and come across the fairways, but lately it seems that somebody has been removing the downed trees, which makes the course much more enjoyable. The biggest drawback for me is the lack of trash cans - this means that people leave cups, beer bottles, etc. on top of baskets, next to tees, in the trees, on the ground. They are making such an effort to spiff up the place, and I would really like to see some trash cans placed around the course.
Other Thoughts:
After hole 3, take the little path down to the paved road and go to your right. Follow it around to the stairway that takes you up a big hill. This is part of Granger Meadows park. The hill provides an awesome view of the houses, roller hockey rink, and Valley Farms Park. It is also used for sledding in the winter time. Often, a plane from the Lansing airport flies pretty closely overhead, and that's pretty exciting. When it's quieter (in the late evenings) it's always fun to have a couple of spotters at ground level (so you can watch for people using the path) and have someone up on the hill really let the discs rip. It's so quiet at this park that you can do all this, take the paved path back, hop on at hole 4, and not interrupt anybody's round.
Don't let the trees discourage you. It's really a fun park to practice your technical shots, play in teams, and enjoy a much less crowded environment.