Pancake Supper - Dividing profits between participants?

Our church is holding a pancake supper fundraiser for kids going to camp. Our goal is for the kids who participate to reap the rewards ... kids who don't participate don't get any money toward their trip balance. We want to pre-sell tickets as well as sell tickets at the door. How can I keep track of which child pre-sold tickets, how many, etc.? I thought about writing names on the back of the tickets, but there's a chance that a sold ticket may not actually show up the night of the fundraiser. Do I give each child a certain amount of tickets and go on the honor system as to how many they sold?