You can see the list of wineries in various parts of NZ
here.
See Hawkes Bay WInegrowers site
here. In Hawkes Bay we stayed in
Havelock North after one night in Napier. We visited Te Mata, Seleni, Stonecroft, Unison, Vidal, Trinity Hill, and Te Awa. I'd add Bridge Pa and CJ Pask to the list. And I'm sure Craig and Sue will have suggestions as well.
In Martinborough we stayed at the
Pinot Villas, and I highly recommend them. Many wineries are only open on the weekend here. We did Ata Rangi, Schubert (just tasted a couple of very nice wines from them), Te Kairanga, Martinborough Vineyards. We also had a great tasting at Burings of Martinborough. Chris Buring is the nephew of Leo Buring and has a consultant wine business and B&B in town. We tried for Margrain and Escarpment as well but never could hook up with the principals at a mutually agreeable time.
For local details link to
Martinborough here
Make a few calls or send some emails, hire a car, and you should have a great time. We certainly did.
Mike
Some NZ Impressions