02
Sydney does hens in pockets, and the best days pick one rather than trying to do them all.
The CBD is the easy default: rooftops, dinners and dance floors. Darling Harbour is the waterfront version, with harbourside cocktail bars and dinners on the water. Sydney Harbour itself is the cruise, with the Bridge and the Opera House doing the scenery. Oxford Street and the Cross come into it when the package does. And the Hunter Valley is its own thing: a winery day out of the city, or the whole weekend.
Choose the pocket that suits her, then keep the day inside it.