The penalty for a violation is a felony conviction, punishable by “imprisonment for not less than one nor more than five years or a fine not to exceed $10,000.00, or both”.
IANAL, but it looks to me that if you’re flying your camera-equipped drone (“an instrument or apparatus used for overhearing, recording, intercepting, or transmitting sounds or for observing, photographing, videotaping, recording, or transmitting visual images and which involves in its operation electricity, electronics…”) over someone’s backyard in Georgia, and they have gone to the trouble of putting up a hedge or privacy fence around it (“a place where one is entitled reasonably to expect to be safe from casual or hostile intrusion or surveillance”), you could be faced with fairly serious charges. I don’t know how that would apply to abandoned amusement parks or factories. (For one thing, if they’re abandoned then there aren’t really any other people to observe the activities of.)
Let’s keep in mind in abandoned amusement parks and factories, the no trespassing rules are there to prevent people stealing stuff and being injured and suing the owners.
I don’t see how flying a camera equipped drone could steal anything or contribute to someone injuring himself on abandoned property.
A key issue is how you define “airspace”. Does it include the interior if a building? What about the area adjacent to a building but below the level of its roof or highest point? What area of the property below the top of the fence?