Anna Ruby Falls is like the Stairway to Heaven of Georgia waterfalls, it's so well known it's almost a downer. The park comes with a massive parking lot, requisite gift shop and a paved trail to the falls. The hike is only half a mile with very little elevation change so it's an easy-peasy walk.
Net result: Very large amounts of people. I went very early on a weekday and still encountered about 60 people in total. I can't possibly imagine what it's like during leafer season.
It's basically three waterfalls in one and totally worth seeing but it feels more like Six Flags than a nice walk in the woods.