Can children borrow someone else's household registration book to go to Disney?

You can't. You can't buy tickets into the park with someone else's household registration book or identity certificate. This kind of behavior will involve the legitimacy of identification. Children need to buy tickets to Disney or other theme parks, but they don't need household registration books. Theme parks require that children who buy children tickets must be within a certain age range or reach a certain height. Children who don't have their ID cards or valid certificates can buy tickets to enter the park with the valid certificates of their parents or guardians.