My husband and I are considering renting a car and doing our own Hunter Valley winery tour, as we've been unable to find a tour company that is running a tour from Newcastle on the midweek mid-May dates we'll be there. We have no problem with the fact that this means one of us cannot drink to ensure a safe and legal trip. However, will a self-drive arrangement mean that we do not have access to the smaller boutique wineries? I seem to recall from taking an organized tour of Hunter several years ago that the smaller wineries only opened their doors to pre-arranged tour groups... Thanks for any insight!