Pros:
Long Cedars is a fun course around a campground and a road that is somehow an actual racetrack sometimes. It has a lot of variety, a couple alternate baskets, a little water, and a bunch of fun shots.
The wooded holes are by far the highlight of this course. They're fun and unique, with some really tight lines to make up for the relative lack of distance. A lot of them have some subtle elevation change which somehow makes those holes a lot more spicy. Hole 10 is the overall best, and I like how it's kind of a mirror of hole 6.
There are some places where it's evident this course is more than just 18 tees and baskets. There are the walls around the island hole 18, the path leading to 17's tee, and the overall design of hole 8, which is pseudo-tunnel shot. There are also a couple mandos in important places to block boring shots.
This course embraces its status as an all par 3 course (except possibly hole 4) by making holes that are reachable in 1 but require some real skill. Sometimes there isn't all that much skill required, but this course certainly doesn't throw a teepad and a basket somewhere and say good luck.
Cons:
Although there are a lot of aspects about this course that I like, some parts are rather clunky as well. For starters, hardly any hole is by itself. You're playing over gravel roads, paved roads, campsites, near fences with actual cows behind them, baskets too close to the next tee, the list goes on. It's also a bit of a walk from 18 back to the parking lot (if some gravel roads counts as a parking lot).
The elevated basket on 16, while cool, makes putting from the lower shelf nearly impossible. That hole is a fun ace run, but nothing else about it is all that great. Even hole 15, which is the overall hardest hole on the course, at least gives a chance at a heroic shot through the woods.
The easy holes are just too easy. The open ones around the start of the course (1-3, 11, 12) don't have much going on, and I'm pretty sure a lot of other holes become rather easy once you figure them out (7, 17, 18). Some favor a certain shot a little too heavily, or allow an un-fun over the top line (5, 7, 13), and playing a right-to-left shot over the fence won't do anyone any good, but it might be the right call for some players.
It's okay to have easy holes, but there's not enough difficulty to make up for it, and this course is only an okay place to take beginners. There's plenty of teeth (plus the water on 5 and the island on 18, which won't be fun for beginners), but also not real difficulty for better players. Maybe this is an decent course for intermediate players?
Other Thoughts:
Holes 3 and 4 can be played a few different ways with their baskets. In general, I recommend playing 3 to the short pin and 4 to the long pin (in part because it adds a par 4 to the course).
I really think there was some meat left on the bone with this course. The woods around 15 and 16 could have been used better, and there could have been a wooded par 4 in there. There might be some more available land behind those holes as well. And since there are safety issues all over the place, the course could have embraced that a little more and added a few crossing fairways, which would have at least produced a few more good holes.
Hole 6's tee points the wrong way, but it's an overall okay hole, so I don't really mind. In some ways, the tee is intentionally awkward to make the tee shot a little more difficult.
There's a mound on hole 10 that I wish could have been used for a green, but it would have made that hole a little too easy.