This is a bit different from your visit but I've been a chaperone for multiple visits to both Kings Island and Cedar Point. Here is what has worked for us with elementary/middle school campers.
- Break into smaller groups based on what people want to do: flats, coasters, water rides, just wander.
- Make sure at least one person in the group has a cell phone and the phone numbers of the other folks with cell phones. This helps in coordinating people swaps between groups.
- Set a time to meet up for food and where.
- If you want to see a show all together, pick the time first thing in the morning. The group that gets there first can save spots for the rest.
Good luck and I hope you have a great visit!