It was certainly our most memorable negative experience during our one week-hike in France: Four persons wanted to order a menu (may be at around 14:30) and we were welcome with very sour smiles and unfriendly comments. When two of us left the place for this and mentioned that we did not want to bother the cook, the waitress mentioned that this was certainly a good idea. Once the two brave remaining once wanted to order a salad, they were told this was no longer possible but that they might have a sandwich. When informing that they preferred to leave, the waitress confirmed it was a good idea...My advice: Simply lock the door, if you don't want and don't need to make business.