Yes, it is definitely a grief story rather than a Camino story. We saw this in a small beautiful boutique cinema, and I enjoyed the cinema more than the film. I took some friends with me, people who love hiking (who hadn't walked the Camino) who were disappointed and found it depressing. There were a few people like me who had walked, and I could hear them saying, 'you really would enjoy enjoy it' to others.
My husband came away convinced that he would need boots because of all the mud and rain, and I had to convince him, the weather wouldn't be like that when we walked, and his shoes would be just fine in September!.
I think the name of the movie sets expectations from some that it will showcase the Camino, if you didn't have those expectations you would probably enjoy it.