Georgia Explorer is for kids, and apparently captivates some of those kids, so you may end up spending a lot of time here if you have little ones. Kids are unpredictable, though, so who knows. Personally, when I visited alone, I spent almost no time there after realizing what it was.
https://www.reddit.com/r/Atlanta/comments/9hbnq8/how_much_time_should_i_expect_to_spend_in_the/