My 2 cents on what really ruins a ride has to be the judgemental meanies of the world. My son is 5 so guess what- there is a bit of additional narration required from me during HoP and AA. I generally whisper to him with my nose actually touching his hair (and he to me in the same fashion) to try not to disturb anyone but there is always someone who dislikes that we have to lean to whisper or that we turned our heads. And guess what- at 5 he thinks that he is the first person to ever notice that someone is being dropped into the well on PotC or all the bees on Splash so you are going to hear him say, with delight, "oh look mom... isn't that awesome?" And I think he has every right to be excited. He isn't standing up. He isn't screaming. He isn't jumping. I just don't see how a little child enjoying a ride ruins it for anyone else. He's under control, he just isn't a paralyzed mute.
There is nothing quite like experiencing a Disney attraction all over again through the eyes of a child is there? :sohappy: