My kids wanted to zipline. After lots (too much) research, I made reservations at Adventure Park. It was ok. The guides were pleasant with their much-rehearsed lines. Nothing was bad about it. There were no impressive mountain views...the longest zip lines are over a big slimy pond. I chose this one because of the package with the horse riding. From talking to people, I should have paid more and gone to their other course at Legacy Mountain. It sounds like that one is actually in the mountains.
I was disappointed with the amount of time. First we were told to be there 30 minutes early...then just sat there for at least 40 minutes in the heat. Then once we started, it was quickly over. I'm guessing it was partially because our group was early and smaller than usual, but we were in and out in less than an hour. That is from the time the guide yelled our time for us to go, to the time we got in the car. The description says two hours...so it definitely did not kill the time that it said it would.
The package with horse riding made this one a decent deal...but if you are not doing that go to Legacy Mountain. there are discount codes everywhere for both.