A Hunter Cellar Door Day
For when the weekend will not fit, but the trip should still happen.

The two-night Hunter weekend is the proper visit. The single-day version is the negotiation. This is the day-trip done well: leave Sydney by 7:30 to clear the Pacific Motorway, three cellar doors and one lunch, back in the city by eight. The valley is two hours each way; you have approximately seven workable hours on the ground.
The trip below is what we would do for a Hunter day with someone who has not been before, or with someone who has been but only to the bus-tour wineries. It is calibrated for the September-to-November window when the cellar door staff have time, the light is long, and the lunch terraces are open.
The picks

Cellar door, 9:30am
Tyrrell's Wines
Best opening tasting in the valley because the museum tasting is poured by appointment from 10am. Arrive early; book the older Semillons specifically. You want to drink before lunch, while the palate is fresh.

Cellar door, 11:30am
Audrey Wilkinson
Five minutes from Tyrrell's. Take the seated upstairs flight; the Cabernet Franc is the surprise and the view across the Brokenback Range stays with you. Out by 12:30.

Lunch, 1:00pm
Margan Wines
The proper estate restaurant. Book the al fresco. Order the share menu; do not order the degustation on a day-trip (too much, too long). Allow ninety minutes.

Cellar door, 3:30pm
De Iuliis
The afternoon discovery. Mike De Iuliis pours alternate-variety wines (Tempranillo, Touriga) that change the way most people think about Hunter. Cellar door is at Lovedale, on the way back to the M1.
The day works in any season but the September-to-November window is the season. Avoid public-holiday Mondays (cellar doors operate on weekend volume but limited staff). Leave Pokolbin by 5pm; the Pacific Motorway through Hexham bottlenecks again on the return.
If you can stretch to two nights, do (see the Hunter Weekend combination). As a one-day proof-of-concept for someone deciding whether the Hunter is worth a longer trip, this is the route.