I do not understand why to eat naked in a big city.
When we are with parents on vacation - on the beach, next to the pool, after the sauna, we often eat in the nude. But this is natural - the sun, air, nature around.
I had breakfast and lunch many times in a restaurant in the naturist Camping Solaris in Croatia. But it was a restaurant near the pool, and it was natural. And in the evening, when the pool was closing, and we went to a restaurant to have dinner and watch football on TV, everyone was dressed, even small children.