We found the Crow Tavern in Picton while travelling NZ in a motorhome using wikicamps. If you ask, the owner may allow a self-contained motorhome to use the carpark if you come in for a meal or a drink or two. We did just that. They also have a separate menu to cater for coeliac. We met George the owner and publican while ordering our meals. We had a lovely chat, and he went through the hotels history with us. The walls are adourned with historic photos and documents detailing all the known history right back to the beginnings.
The pub toilets are the cleanest toilets we've come across in NZ.
Thankyou George for your motorhome hospitality. A big two thumbs up from both of us.