Pros:
My family qualifies as long-term novices. We've played only 3 DC courses thus far, and this is my favorite.
Great concept to have 27 well-designed holes in 3 separate loops. If you don't have the time or energy for all 27 you can pick your starting point and work from there. My son and I started on 10, and played a combination of white and red tees, covering all 3 loops.
Good challenge with a huge emphasis on accuracy. It would help a lot to have more shot selection than we can produce - including a reliable roller, a backhand drive with a flat low trajectory, and a strong tomahawk recovery shot. Many of the holes, from both long and short tee, have trunks and branches tight against the tee boxes which can disrupt your drive. We noticed this especially on #6, #11, #15, #20, #21.
Holes in the grassy areas provide inviting landing areas, but you can't just let the drive or approach drop anywhere. Depending upon basket placement, you can be directed back into the woods, and a potentially blocked putt. That was the case on #8, #9, #14, #19, #23.
The flags above the baskets are a huge help, especially with so many basket placements to consider.
Favorite holes:
The entire stretch from #12-14.
12 drops sharply off the tee, inviting a longer drive. The fairway curls back uphill to the right.
Trees at 13 pinch the aim of your drive left, but a creek and OB line the entire left side of the fairway. Great natural setting, demanding accuracy with each shot. My choice for toughest hole on the course.
From the long tee at 14 you need to clear a horseshoe bend in the creek. Not especially hard to do, but it's a great view. As close as this course comes to a signature shot.
#20
I liked how the trees frame the fairway for the drive, and the very sharp dogleg right design, with a gradual downhill slope to the basket.
#22
Another gradual downhill that invites a longer drive. The angle of attack consistently tightens as you approach the basket, back into the woods.
Cons:
The following observations definitely won't be cons for everyone.
Even though it's relatively short, the course isn't beginner friendly. On most holes, one wayward shot invites another three or four pinballs through the trees.
Most tee boxes are narrow, and made of rough cement blocks. It's a bit tougher to get the best footing for a run-up. More important, when the trees are tight against the tees, a narrow tee box makes the shot selection and angle even more limiting/exacting for the drive.
Baskets are a bit worn, and a few of them seemed to sit especially low to the ground. Not a big deal: from the DG postings, I realize there's no set standard for basket height. And with all the basket placements this course offers, the situation can change from one visit to the next.
Bring bug spray for warm weather. 85 degrees when we played, and we felt we were chewing our way through swarms of gnats. Bugs seemed much less of an issue on the more wooded sections.
Fairways can get overgrown in the summer, and there's lots of blind shots that increase the opportunities for lost discs. This was most obvious on 14. We lost track of a couple throws that were as accurate as we could hope for.
First-time course navigation can be difficult. There's currently no map on the on-site bulletin board. That could be an easy future fix. I downloaded the DG course review map after the fact, and it's very helpful. It shows why we stumbled from 12 to 6, and why we veered to 13 after playing 25. The signage wasn't consistent, but otherwise OK. The longest basket-to-tee walks, from 13 through 16, were fairly obvious.
No clear sign to the first tees. My son and I started on 10 because it's the first tee we found. Tee signs typically refer to blue and red, with red as the long tee. Once on course, it's pretty clear that the white tees - often marked by plastic cups - are long, and reds are short.
Other Thoughts:
Seneca Creek looks like a great park overall. Lots of space, which permits the course to stake out its own territory. My daughters took a kayak out on the lake, while my son and I golfed.
There were yellow brick frames set into most if not all fairways. They seemed to be ultra-short tee boxes. If that's correct, they were almost too easy for anybody above the level of my youngest daughter. Or maybe they're non-stop ace runs for local competitions. That of course can be a plus, but it would help if the tees get some kind of clarification/visibility.
Seems like a huge difference between summer and winter golf on this course. It may be psychological more than anything else - but between all the bugs and sweat and encroaching leaves and brush, we may have benefited from better timing. On the other hand, it was nice to see all the greenery, and it was clear enough for us to spot a few deer along the left side of the 23rd hole.