My son is 5, and I can't think of
any ride that I would let him ride alone, without an adult to accompany. Maybe if he had an older sibling, then I would think about letting them on the rides where I could see them together like Caroussel, teacups, dumbo etc..
Anyway, why should I miss out on the fun?!.....
That said, if you are asking about suitability, my DS will go on all rides now, apart from Space Mountain and Indy because he's too short. It all depends on the level of daredevil your child has! If he/she's a bit timid, you would best start off in Fantasyland where there is nothing really scary, working up via Casey Jnr, perhaps Pirates, Phantom Manor, and eventually reaching BTM possibly. Just my thoughts.
