Hi Carla,
Hope things are going well, I camped more or less all the way so I'm not much help with pilgrim accommodation. I got the impression that there were plenty of pilgrim style places to stay along the route. As you've probably already found out the tourist info places are v helpful. Seem to remember
Le Mas-d'Azil had places to stay with local priest and I think there were quite a few places around there. (I'm love prehistory so mas d'azil was cool, but there's another set of caves a bit off the route, (it looks like they are on route but the entrance is miles away) which I found really moving, entrance is limited to X number per day but they have red hand prints and all sorts of drawings... I don't have my books with me and can't remember name but it was pretty awesome if you like that kind of thing.)
There's an eco gite in the place before
bernard de comminges at bottom of mountain that I really loved. I had planned to camp on top of the mountain but the campsite was unexpectedly closed, so I walked down the mountain feeling pretty miserable as it was getting late. I rocked into this little village thinking it's miles to next campsite but should be able to make it before dark. Stopped for a drink in a little shop and asked if the gite was open he said of course and I spent a very special night there drinking water from the village stream, enjoying a fantastic meal and watching the most tremendous thunderstorm via the roof light - someone was looking after me that night
Note bernard de comminges, the night I got there, possibly a Monday? there was only one place to eat and all they served was salad. It was a very lovely salad but the place was full of starving walkers and cyclists. The campsite there has wooden chalets pilgrims can stay in I can't remember how much 10-15 euro maybe. You would need sleeping bag there.
All the best - Helen