users/developers who wont write stories
Users aren't supposed to write user stories. They aren't supposed to tell you user stories. You can expect them to talk about how they work, the problems that bother them and what they would like to have to facilitate their everyday work.
You, in your turn, is supposed to listen to them and take notes. If they allow, use a tape recorder or a camera. Then you bring the collected information back when you replay it and identify what you call user stories. You discuss them with the team and when you have agreement you have use cases to target in your development.
What role developers play, is up to you. If they just coders, they don't take part in the process.
If they in part act as consultants, then they help define user stories.