Nope, I don't ghost the steps out. A slight percentage of the reason why is that I don't know how well I'm doing (like whether I'm getting marvelous steps or perfect steps or great steps) if I ghost the steps (and ghosting and keyboarding at the same time is just a really bad idea in case you were thinking about that...), which makes judging sync a thing to have to do with a separate keyboard playthrough, and which feels awkward anyway because I need to feel like I'm actually playing DDR instead of just shadowing the 2 people who are currently occupying the machine
edit: ok that sentence isn't supposed to be just one sentence (because of the first 7 words) but yeah