I couldn't find discounted Gold Coast theme park tickets until I stumbled across this.
Adrenaline have $15 off any purchase $79 or over. I was able to do three seperate transactions for Village Roadshow theme park tickets and get $15 off each time. Shows in the top banner and automatically applied.
Note you'll probably get charged a tiny bit for using CC, for $119 discounted tickets it was 66c.
Receive $15 OFF when you spend $79 or more in one transaction. Simply enter the promo code EXTRA15 at checkout. Limit of one promo code per purchaser per transaction. Not valid for Gift Voucher redemptions, sales of Picture This Ballooning or in conjunction with the $250 Gift Voucher promotion.
Feel free to fix this post if I've missed anything admins!