How do you get the peeps to collect stamps on roller coaster tycoon 3?

In RollerCoaster Tycoon 3, to get peeps to collect stamps, you need to create a "Stamp Collection" feature by placing stamp machines throughout your park. Make sure these machines are easily accessible and well-placed near popular attractions. Additionally, ensure that your park has a good variety of rides and attractions to encourage peeps to explore and visit different areas, increasing their chances of collecting stamps. Lastly, consider using signs or paths to guide them to the stamp machines for better visibility.