What do you mean by a tour? You want to taste wine or see how they make it?
I suggest visiting the wineries around the Naramata Bench, just outside Penticton. Take your wife for lunch or dinner at Hillside.
http://naramatabench.com/our-wineries/
You could also visit about 10 wineries around Summerland (Bottleneck Drive).
http://bottleneckdrive.com/about-us/wineries/
There are now 200+ wineries in the Okanagan.