Pros:
It's a disc golf course, in an area where there's not much to choose from. It's got multiple tees, decent signage, some decent holes, and you will probably have the course all to yourself. There are some really great views, and the opportunity for some exercise.
Cons:
Well, it's not particularly challenging. There's really only 2 or 3 holes that have any opportunity for danger. On most holes there's no real reason to score over par because you can usually recover easily, and birdies are plentiful thanks to the many short wooded holes and fairly simple open holes. Hole 16 has been replaced and yes, it's probably the dumbest hole I've ever seen. There's no benefit to throwing anything but a putter 45ft twice and taking the 3. Navigation can be a problem, finding the ancient chainstars are absolutely a problem, especially in the woods. And of course, after 16 the biggest complaint has to be the hike from 18's basket back to your car.
Other Thoughts:
If you don't like spiders, it's not the course for you. A small thing, but with so little traffic expect you'll be the first person to be finding those webs with your face on every hole. The City of Robbins could definitely make the course more accessible, or at least, visible- as it is it feels sort of like you're walking onto the set of Deliverance. Some of the holes are just bizarre- 6 for example, from the long tee, is a pretty impossible shot. Some of the jumps are hard to find as well (3-4, for example, which is not well explained by the map). The trip back from 18 is, like I stated, a lot of walking without anything to do. Since the course traffic is so low, why not give us 2 more holes back to the start? 19 could start on that corner and crash into the woods, crossing the long tee of 6. 20 would be a long, technical wooded hole that would at least give us something to do on the walk back towards the beginning. A better course map wouldn't hurt either, since it doesn't even show you the alternate 17 and 18 holes. I got lost looking for 4's tee because I came upon alt 18's basket when I was expecting to see a tee! And since there are walking trails all around it's hard to know if you're heading to the next tee or on a nature safari. All that said, once you know the course it's easy enough to get up and down (except that ravine on 11!), and it's better than the course you don't have.