The following are known Action Replay Codes for Sim Theme Park on Sony Playstation (PS1).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay, CodeBreaker & GameShark

Lots of Money
801d56ba6000

Lots of Door Tickets
d01063c80003
801063c8002e

Gold Tickets at Start/ All Parks
80103358001f
8010335c001f