Pros:
The course is in a pretty park setting with other facilities on the premises... playground, ball field, etc. Plus you can see a lot of different species of birds on the creek... cranes, ducks, etc.
Excellent use of the limiting, narrow tract of land that this park is on. Most holes are bordered by either a creek or private properties on one side or the other. The length isn't overwhelming so having these hazards to work around makes the holes a lot more interesting. The creek just calls out to you... feed me!
Most of the holes play through grassy fields with a few large trees dictating the path that you take to the pin. So the fairways are all clearly defined. The mandos make sense and really add to a couple of the holes that would otherwise play extremely short.
There are a couple holes that play in pretty thick woods. These help to break up the feel of the course a little.
The signage is OK and gets you around the course pretty well. I'd definitely recommend going to the courses site and printing their nice map too, though. There are concrete tees along with shorter natural tees on a lot of the holes. The baskets are nice and in good shape.
This course is a very nice beginner course. Even with the OB yards and creek, if you're not trying to get close to the pins on your tee shots, you can pretty easily avoid going OB. So the OB shouldn't suck in too many beginner shots as there is normally plenty of room to throw away from the OB. It just won't get you the best score that way.
The course should still prove interesting to experienced players looking for a quick 18. The creek provides some definite risk/reward opportunities if you really go for the pins to shoot for birdies.
Creekside is pretty close to a lot of different things to do around Harrisburg. Shopping, restaurants, etc. are all reasonably close.
Cons:
Because of the limitations of the property, there isn't a big amount of variety to the holes. A lot of the holes feel pretty similar to each other, ie. nice grassy holes with just a couple trees to avoid. The course doesn't have much elevation in play. And you're never throwing over the creek, just alongside it. The course doesn't require a lot of technical or really creative shots. Other than the creek and the yards, there's not a whole lot of trouble that you can get into generally speaking, which seems to make the course play pretty easy.
Other Thoughts:
I hope that my review doesn't come off as sounding too negative about this course. I had a really good time playing it. And given the opportunity, if I'm in the Harrisburg, PA area again I'll definitely be back.
#10 would have to be my favorite hole on the course. This is a big risk/reward hole, as I mentioned before. It's 293' long. I can drive a little over 300' consistently now, so this is within my driving range. However, my accuracy at 300' still needs some work. So with the creek lining the fairway almost the entire way on the right, and with an OB parking lot on the left when you get closer to the pin, you have a very narrow opening to thread to get close to the pin with your drive if you're trying for a birdie.
All in all, it's definitely worth playing a round here. Just don't go too far out of your way or set your expectations too high and you shouldn't be disappointed.