Pros:
Good variety of distances. Ace runs on holes 1, 2, 5, 6, and 8. "Two drive approach" needed on hole 7. Only a few tree obstacles. Water obstacles are present, yet avoidable. Long sticks are usually available to retrieve wayward shots, and the baseball fences aren't too high to jump over.
Since the installation of the "kids water playground" on the north side of the park, a "goose cannon" has kept most of the geese away, which means WAY less goose droppings compared to years past.
Cons:
People.
WARNING: DO NOT go to Lamar park on a Summer weekend. Chances are people will be using the baskets to anchor pinata strings, or move the picnic table directly into the fairway, or run to your disc after you tee off and try to throw it back. Best to go to Lamar during the work week.
Also, I find it easier to park by the tennis courts and get the walking out of the way early, as a "warm-up." That way after you are done you can leave right away.
Other Thoughts:
Shooting par on #7 and #9 are the main challenges here, but can be done. Shooting under par on the entire 9 constitutes a good game.