Don't seem to see this on special very often, so hope this helps someone :)
From here:
The Silver Season Pass includes unlimited access to Wet’n’Wild Sydney during the 2015/16 Season.
and
The Gold Season Pass includes:
- Unlimited access to Wet’n’Wild Sydney during the 2015/16 Season.
- FREE Parking
- Unlimited MyMemories on-ride digital photos
- 10% off in-park Retail purchases^
- 10% off Sydney SkyCoaster and The Surf Deck+
- 10% off Cabana Rental+
- 15% off General Admission tickets
Unless otherwise stated: Fees for parking, food, merchandise, locker rentals, Fast Pass, pay-per-ride attractions (The Surf Deck and Sydney SkyCoaster), special concerts or events are not included in season pass prices. Prices and product offerings are subject to change without notice.
I got an e-mail the other day to buy ANNUAL GOLD PASS for $80