One main problem is that Fun Spot Atlanta does not have many things to do besides Arie Force One.  I only spend about an hour at the park to ride Arie Force Once but nothing else.  I have been buying season passes since the coaster opening 3 years ago.  This would not have happened without Arie Force One.  Also, the park is located in rather remote area. ATL is not far away but the park is not close to other notable attractions in Atlanta area.

The ride showed no increase in attendance will have parks lining up to buy it. 

The highest I could find as of recent was Guardian’s of the Galaxy Cosmic Rewind at Epcot. Attendance for Epcot increased the following year it opened by 19.8%!

Has any roller coaster every increased attendance by 30%?  I think Dennis Spiegel has mentioned Kingda Ka didn't show any appreciable increase.