Another option (along with the Hoyts offer) to extend remaining Discover vouchers that expire soon.
Sydney Tower (Centrepoint) is free (normally $24.80) when using a Discover voucher to buy a gift voucher that is valid for 3 years
https://merlindineanddiscover.experienceoz.com.au/en/sydney/…
Other 3 year vouchers for Merlin properties are available as well for Madame Tussauds, Sydney Aquarium and Wildlife but these aren't completely free
https://merlindineanddiscover.experienceoz.com.au/en/sydney/…
https://merlindineanddiscover.experienceoz.com.au/en/sydney/…
https://merlindineanddiscover.experienceoz.com.au/en/sydney/…
Need to redeem by 30th June
You are legend thanks !