July 2 (Reuters) - Parques Reunidos Servicios Centrales SA PQR.MC :
* SAYS EXPANDS TO AUSTRALIA WITH ACQUISITION OF WET'N'WILD SYDNEY WATER PARK
* SAYS INVESTMENT WILL AMOUNT TO 25 MILLION EUROS
* SAYS TRANSACTION FORESEES VARIABLE COMPENSATION THAT WILL DEPEND ON PARK'S REVENUE PERFORMANCE