Not a big deal if they are not installed.
However, my first ride in 1984 had movies with a Super 8 camera and subsequent rides were with a GE camcorder. Watching the action makes many of my friends motion sick because of the rough ride. The camera or camcorder seems to pick up every little movement and magnify it: especially when I used the zoom on the camcorder.
I've only ever seen it show up on movies or videos.
Those I shot from the D&S coaches do not have the problem and are a joy to watch. Also those I shot from Southern RR mainline steam excursions do not have the motion but then again, the heavier cars are better matched to the coil springs I suspect.
DvV