Back in the good ole days of Dueling Dragons, I would find myself TERRIFIED of the queue for DD. Nothing scared me more than walking past that fake gate with the dragon roar behind it. Also, there were some great memories of my dad hiding behind pillars and scaring the piss out of me. My point?
I turned out pretty ok.
I had always been shocked to see parents bring small children in to halloween horror nights. Like, why? But! People chose to do it and I'm sure it'll be the same here. If you don't want to bring a kid through the queue, don't.
Final point: I used to cry like a baby on Jaws and Kongfrontation. Last I checked they didnt get rid of those rides or tone them down for the child's sake.