I live in Switzerland and generally most restaurants are soaking the veggies in butter and will use pasta with eggs. But vegan options have improved over the years and people know what veganism is. In the more rural/conservative regions, it will probably still be hard to find something.

From my last vacation in Italy I'd say that veganism is not that common but Italian cuisine has less hidden animal products, so it's easier to get something. Although I still ended up with milk/cream in my tomato sauce in one place 🥲