Book online and save 50% off your partner's fare on selected Sydney Harbour sightseeing and dining cruises.
The deal is you pay full price & the 2nd ticket is half price (they say for your partner, but it could even be for your mum I reckon - or your neighbour, or workmate, or anyone your imagination desires ;-))
Some of the cruises are pretty pricey but if you were already thinking of it then it's a bargain, and actually for example for 2 people the whole day 'Harbour express' sounds pretty good for tourists (at $52.50 total):
Includes
• Hop on Hop off all day pass
• Visit up to 7 famous harbourside attractions including Circular Quay, Darling Harbour, Watsons Bay, Taronga Zoo, Luna Park, Shark Island & Fort Denison
• Harbour commentary
Good deal but NOT the best deal.. see this link http://www.ozbargain.com.au/node/13265
Through this offer you can buy one get one free on many of captain cooks cruises, including the cocktail cruise, club dinner cruise and coffee cruise. Sure it doesn't cover all the cruises that capn cook offers, but these are the more popular ones.
The other plus is you dont have to pretend your mum is your partner lol