Vouchers include: WB Movie World, Sea World, Wet n Wild, Hoyts, Taronga and Western Plains Zoo, etc.
I just came from the Sydney Royal Easter Show and got a Coke showbag. One of the items inside is a leaflet with the URL of Coke's partners vouchers. You don't need to buy a showbag to make use of the vouchers. Just follow the links of the URL.