Pros:
A friendly course to players of any skill level. Easy to walk and navigate with a map, you can enjoy an afternoon with players of any skill level just cruising around the park.
There are a few holes towards the end of the course that are fun and have a little more character than the rest of them, giving it a little bit more flavor and shaking things up a bit.
Well shaded the entire time, so it was nice and cool while playing, even in August. Very well maintained park.
Cons:
This was not a challenging course, and very repetitive to an experienced disc golfer. Only a few of the holes really even stick around in my memory, I used a low skipping hyzer line on the majority of the tee shots and scored fairly easily. It's a nice course for beginners, or people playing with their families, but it offers very little to players with much skill.
Other Thoughts:
It's a nice little, beginner friendly park course. There's not too much to criticize about General Sibley, there's just also not really anything memorable about it either. I would play this course again if I happened to have some extra time on my hands in Bismarck, purely for the opportunity to see how low I could score, but I wouldn't go out of my way for it.