Communication is an invaluable tool in a parent's toolkit. Start early and repeat often. Explain the rules of the theme park to your kids before you go. Explain to them (and demonstrate) proper ride behavior: standing politely in line; waiting for assistance from ride attendants; making sure restraints are secure -- and leaving them in place; keeping hands and arms inside the vehicle; staying in the seat; and following the instructions of ride operators.
Instruct kids to look around and notice who and what is around them. Make sure they know to walk -- not run -- so they avoid collisions and possible injuries to themselves and other visitors. And don't forget to warn children not to slip past barriers into restricted areas at rides and around the park. Awareness of potential dangers keeps everyone safe.