I guess it depends upon what scares a child. When I was 3, Snow White scared me senseless, as did Haunted Mansion. For HM, I brought on a little pen light and kept it on throughout the ride, and within a few years, my fear just faded. I was always a fan of POTC, except for the drop. I'd grab onto the handle bar with one hand and my family with the other and squeeze tight. Once I got past that, the ride was an enjoyment for me. As for Philarmagic, I don't see why not. It's a friendly little ride. A bit of brightness and noise...it's up to your discretion.