Universal Studios Park Adventure Cheats

Find trash on the floor pick it up with the A button and find a trash to
put it in for extra points.

Walk around the park, picking up trash and throwing it away.

Easy Points:
Watch the Waterworld Show repeatedly to get 100 points each time.
Easy Money:
Pick up trash and throw it away when you are walking around the park.

Get all eight stamps then talk to Woody Woodpecker near the globe. Select the magic show when you talk to him. Allow the credits to finish, then return to the title screen. The option for attraction mode will now be unlocked.

Get all eight stamps and then talk to Woody Woodpecker near the globe. Select the magic show when you talk to him. Allow the credits to end,then return to the title screen. The option for attraction mode is now be unlocked.
Source: gamewinners