Pros:
The course serves its purpose as a small fun activity to do at this village-resort. The course takes you around Barnsley Gardens' beautiful property and it is very well kept up landscape wise. The staff is very nice and will give you a map and directions to the first hole. The last couple of holes present fairly difficult elevation changes. If you enjoy airing it out and testing your arm strength, this could be a very enjoyable course.
Cons:
First of all, there were no tees. All there is to mark each hole is a wooden stake with the hole number carved. We had to guess where to start each hole.
If you don't get a map, there is no way to figure out that hole five is on the complete other side of the property of hole four. There are no signs pointing you in the correct direction.
Besides Hole 2, there is nothing particularly special about any of the holes. They are for the most part flat and open. This is understandable as most of the property itself is flat and open, but the designer might have fared better using the creek or going into the woods rather than staying on the main part of the grounds.
Other Thoughts:
As a resort activity to complement billiards, badminton, and ball golf, this course works really well. As a disc golf course, it simply isn't worth any effort to convince the gateman that you just want to get in and play a round.
If you're looking for an open course to practice driving and accuracy, try out the Chamblee Church DGC in northwest Atlanta instead. The two courses have similar hole layouts, but the church is definitely open to the public (and has tees).
That said, Barnsley Gardens is an excellent vacation destination. The staff there are just too kind (including their famous "Fairy Godmother"), and they supposedly have a world class ball golf course. But don't start looking into rooms just because they have a disc golf course. It's worth playing if you're there, but not worth a special trip.
BEWARE: Renting out discs will cost $15 per person, even if you are a resort guest. They do not mention this anywhere in any of their resort guides. Although I'm not positive, I wouldn't be surprised if they tried to charge you if they caught whiff of you playing for free, so if you do play you may try to be quiet about it.