Activate the following cheats by entering the corresponding names as a guest name:
CHEAT FUNCTION - NAME Photographer guest - Chris Sawyer Artist guest - Simon Foster Increase guest happiness - Enter Melanie Warn as a guest name. You can rename the guest to another name and repeat this on another guest as needed. Increase park rating - Enter John Bibrough as a guest name. Press L to increase your park's rating. Waving guests - Katie Brayshaw Hungry guest - Tony Day "Wow!" thinking - John Wardley Free rider - John Mace Faster Go-Karts - Enter Damon Hill as a guest name. Enter Michael Schumacher as a guest name to race even faster. Slow and crazy driver - Enter Mr Bean as a guest name before they get on the Go-Karts.