I saw the same thing when I was looking at the stone Mountain website not too long ago. Not sure why that is, but I find it interesting both places are doing the same thing. I don't have any kids, but I wonder if one or more school systems around the area changed which week they did spring break so they want to cover both weeks now.
Cobb and Fulton County schools are out for spring break on different weeks. Hopefully this will become the norm for years to come.