$10 off Activities in Australia and New Zealand - Min Spend $50 @ Klook

I've used this company a couple of times in the past as they often offer prices that are better than going direct. Make sure you compare though as they can be more expensive also.

T&Cs

The promotion code “SHKLKANZ” is valid for redemption from 28 September 2019 until 13 October 2019.
This promotion is valid for bookings made via Klook’s website and mobile app.
The promotion code “SHKLKANZ” entitles users to $10 AUD off Klook activities within Australia and New Zealand only.
A minimum spend of $50 AUD is required to access the discount.
The promotion code is valid for one time use per user only.