Hi Albertagirl,
I walked the St. Gilles route with my partner who is a vegetarian who sometimes eats fish. We had booked ahead (before we left home) and just asked if would be possible to accommodate her. We got some excellent meals with locally caught fish. Also omelettes and sometimes some nice small savoury tarts. And, of course, incredible cheeses and wonderful green salads.
On the LePuy route - most of the meals I had in gites had meat, vegetables, salad and a cheese course. Often a soup - sometimes a lentil soup. I never asked about the stock used for the soups.
I walked for a few days last year with a French couple who were vegetarians. They stayed in gites, but they were pretty flexible with the variety of responses they got. Again a lot of omelettes. And sometimes they just had the non-meat parts of the meal. One night, in an area very well known for duck - the rest of us were served duck, green salad, and cannellini or some similar kind of white beans. An omelette was made for the vegetarians and then they were offered the salad and the white beans. My friends asked how the beans had been cooked. The answer: in duck fat, because, of course, that is how you cook beans! The woman who ran the gite (it was very small) was genuinely perplexed that someone would not want to eat beans cooked that way. My friends just smiled and thanked her and took the beans. There is more acceptance and understanding of vegetarianism in France than there used to be - but it is still surprising for some people.
ml