Roze/Rozes
Why are a couple of cast members credited as playing characters whose names end in S and some who don't? is that a mistake, or are there two sets of surnames?
In French, they don't put an 's' on surnames when the pluralise them, e.g 'chez les Smith' is correct, whilst 'chez les Smiths' is not.
That would suggest the family in the film's surname is in fact 'Rozes' and not 'Roze'.