Pros:
This course has more variety then meets the eye.
3 courses, Red, Blue and Black (black is up for tournaments only).
Red - a 10 pin course, with 2 tee's for each pin. Short throws with very challenging OBs make this course more difficult then other courses its size. The red course is very well groomed year round as long as you keep your throws in bounds. Take special attention throwing from tee 5 not to go in the swamp unless you dont care for the disc.
Blue - full 18 pin course that overlaps with the red course from time to time. Much longer holes then the red course, but still only boasting a single par 4 in its quiver. A great variety of dog legs, mandos, OB and distance that make this course more challenging then expected. It has a very open feel for just about every hole, but with designated problems it gives the course excitement. Kind of like saying "dont step on the carpet, it's made of lava", this course has a few "dont throw into that outlined spray paint circle. it's a pond." Of course none of this is actually marked, but I'll get into that later. There is only 1 multiple tee option, but they move the pins pretty frequently. If you play with a strict out of bounds rule, and keep an eye on the path for slow walking senior citizens you'll have a great time.
Black - only set up for tournaments. This course adds another 9 holes to the regular blue course that extend further into the unused park (other then the seniors of course). Nothing really stands out about this 9 other then the "clown tooth" hole. a short hole with a narrow double mando.
All and all if you know how to navigate the park and all the holes, you can create a huge variety of options that give this course tons of replay. Play some blue, sprinkled in with some red variables, skip one, take a break on the swings for a while, dance around in the adjacent trailer park, really just do whatever. When you live in Walla Walla and the nearest course to this one is an hour away, this is truly a great park to have.
Cons:
A huge con for the entire park is it's not marked. There are no signs or guides anywhere, trying to navigate this without someone who has played it your first time will tough for the red course and impossible for the blue. If the black course is up, you wont even find it. Also the mandos around the course are not explained other then by word of mouth. They truly add more excitement. However if your not privy to them, you'll be stuck wondering why they'd highlight such an ugly piece of grass.
Red - the second tee's. They are not paved, and generally don't add any excitement for the second time around. The tee's are usually 2-3 feet away from the tee you first threw from, and generally make the pin a little closer, or a little further away without adding new obstacles *exception hole 5 and 15*.
Blue - holes 3-16 aren't groomed. ever. in the spring its at it's peak of enjoyable play, but in summer it's very very very dusty, overgrown in spots and all in all ugly. This things can't be fixed, but they are cons just the same.
Black - only set up 3-4 weeks out of the year, and it's addition isn't anything exciting.
Other Thoughts:
Great community! It's a rare thing to play here and not see the regulars. Everyone that I encountered playing here when I lived in Walla Walla over the years were very friendly. They *don't drop beer cans everywhere*, are always willing to help with directions on the course, and adhere to the subtle nuances that is polite disc golf etiquette. So if you play here, do the same.