Interesting story. And congrats on your upcoming anniversary!
I'll share this story about my first wife because I think it's still pretty cool.
She was not a nudist at all when we met. It took about 2 years for me to convince her to go to a nudist resort. And then, even after several trips, she would cover up whenever other people got "too close"; in fact, she was mostly naked only to swim in the pool.
Then, I had us join a non-landed club, where people would meet at each other's house. She wasn't too thrilled about it, to say the least. But she still agreed to accompany me, with the stipulation that she would keep on her (dreadful) sarong at all times.
The first time we went, she did in fact keep her sarong on the entire time. But the second time, something happened. The event that day was a potluck, and all the women were in the kitchen, naked. After I undressed and my wife put on her sarong, my wife was immediately invited to come help in the kitchen. A bit taken aback, she reluctantly agreed to help; while I went outside to join the gentlemen.
Some time later, as I sat outside, I started hearing my wife and the other women laughing. Then I suddenly heard her voice announcing that dinner was ready. I turned and my jaw dropped when I saw my wife standing in the doorway, completely naked! I never did find out who had convinced her to drop the sarong; or if she'd ended up feeling silly about covering up when none of the other women were, and dropped it herself. But whatever had happened, it had changed her mind completely. She spent the rest of the evening, socializing and being naked right in front of other people, with no discernable discomfort or self-consciousness. Even at the end of the night, when people started leaving, she was still naked, helping our hosts clean up.
That event was the turning point for her. We returned to a resort a couple of week later; and her attitude was radically different. Instead of covering up every five minutes; she stayed naked the entire time. After starting shaving, instead of sitting in the back of the pool, she chose to sit right in front of it. Instead of sitting back quietly, she started going out of her way to meet people and socialize. That non-landed club event had pretty much completely liberated her from her hang-ups. I was stoked and proud of her for going "full naked."
But it took time. That's why patience is so important with "reluctant wives."