Activate the following cheats by entering the corresponding names as a guest name:

CHEAT FUNCTION - CHEAT CODE
Photographer guest - Enter Chris Sawyer as a guest name.
Artist guest - Enter Simon Foster as a guest name.
Waving guests - Enter Katie Brayshaw as a guest name.
Hungry guest - Enter Tony Day as a guest name. This guest will usually be hungry or very hungry.
"Wow!" thoughts - Enter John Wardley as a guest name.
Guest pays double entrance fee - Enter John Mace as a guest name.
Guest pays triple the price - Enter Mal as a guest name.
Intamin fan - Enter Elissa White as a guest name.
Faster Go-Karts - Enter Damon Hill as a guest name. Enter Michael Schumacher as a guest name to race even faster.
Slower Go-Karts - Enter Mr Bean as a guest name.