I wouldn't think that children would be frightened if you sit away from the animals and such... just ask that when they sit you, make sure its farther away from any of the creatures hanging around... that way, your child can see the animals, but not have them really near them.
I have never cared for RFC because I dont see it as a novely. Like another poster said, there is one in Dallas so its no big deal to visit anytime I want. They're just another chain to me, much like planet hollywood, adn I stick with Disney unique places when I vist there. So many choices, so few meals to eat at! But I understand that it IS unique to some... I would def make PS for it, as there is often a looooooooong wait from what I've heard from others on thsi board.
I hope you enjoy it =)