Money rules the world, also in this game. Here are some level codes for parks
with much money...

Parkname        Codeword        Money
DISNEYLAND      FRN307THGB      35   millions
                PKNQ2FM6FB      32,3 millions
                PRNBWCKNGB      36,2 millions
EUROPARK        BBBBB3VN.090B   180  millions