I grew up 15 miles west of the Six Flags Over GA park. When it first opened back in the mid/late sixties, it was $3.95 admission for the day if I recall. It was a fun place to go throughout middle school and high school with friends. The Scream Machine...one of the early big roller coasters. And I think Jim Henson got his Muppet show started there before he became famous with Sesame street and the movies.
Atlanta has become a $hit-h0le country since that time.
Six Flags Over GA is a dump in a dumpy area now. When I visited relatives in Georgia in the 1960s/70s we would visit the park, and it was very nice back then.