Special Guests
Give one of your guests one of the following names for the desired effect.

Password - Effect
Michael - Schumacher A fast go-kart racer
Melanie - Warn Automatically Happy Guest
Damon - Hill Fast Go-Kart Driver
John Bibrough - Guest Increases Park Rating
Simon Foster - Guest Paints Pictures
John Mace - Guest Pays Double on Rides
Chris Sawyer - Guest Takes Numerous Photographs
Richard Branson - Guest will make other guests rich
Richard Tan - Guest will steal from other guests
Tony Day - Makes guest hungry.
John Wardley - Positive Thinking Guest
Mr.Bean - Slow Go-Kart driving
Katie Brayshaw - Waving Guest

Unlock Mega Park
Unlockable - How to Unlock
Mega Park - Complete all scenarios

Easter Eggs
Quacking ducks
If you click on a duck when it is flying or swimming, you will hear a brief quacking noise.

Glitches
Hovering Guest
Pick a random guest up with the pincer tool and hit backspace. The guest should remain in the position that he was in when you picked him up with the pincers.

Mysterious Dissapearing guests
You raise a piece of land as high as it can go. Put a guest on top of the land,and quickly lower it. The guest should fall down slowly. If not, try again until the guest falls slowly. When the guest is about to hit the ground, then quickly raise the land. If the guest already hit the ground, then the glitch won't work. If done correctly, then the guest should fall through the ground. Make sure that you have memorized the guest's name, and keep his window up. Eventually, the window will dissapear, and his name won't appear in the guest's list. So, the guest mysteriously dies.

Remove tall grass
If your grass is really getting out of hand, just choose the land leveller. Click once on the plot of grass and the tall weed will disappear. It still won't be freshly cut, but guests won't complain about uncut grass. Plus, it's totally free compared to the handymen.

Secrets

A Bit of Free Money!
When a guest lets a balloon go and it is floating up, repeaditly click it, you will gain some extra chash!

Multiple Easter Eggs
You can have more than one person with the same name by changing the capitalization of the name's letters.
Example: There can be four or more Chris Sawyers in your park if one is named Chris Sawyer and the others chris sawyer, CHRIS SAWYER, and cHrIs SaWyEr.