I'm not sure whether Andreas sees 5 wineries as too few. 5 wineries in 4 hours gives the opportunity to taste maybe 30 different wines which seems like a good representation of what Marlborough offers. My aim is to take time and enjoy a few wineries, explore their points of differences and understand a bit more about the growing of vines and production of wines, rather than to tick off as many wineries as possible.

Yes definitely more a white wine region than red - if you are interested in red the best I can do is visit wineries that will offer two red wines, usually pinot noir plus one other. That is a reflection of Marlborough's climate.