In the subtitles the kids, especially the youngest curse using the strongest language, yeah, worse than MF. I wonder if the French equivalent is as strong?
And about the film - mild spoiler... or if you've read the synopsis it's not!
Spoiler:
the drowning scene is dumb - she's on the inflatable, then she somehow falls off, very stupid, and instead of holding onto it somehow decides to abandon the equivalent of a life preserver and flap and drown - and from a film angle, the director uses sped up footage in a few shots that look really stupid (by under-cranking the camera, like in a car chase to make it look faster). even if she can't swim it's still unbelievable, could have just had it that the stopper came out, or it had a tear in it and deflated, anything else!
Other than that, it's a good film. Worth watching for the older girl. The others are annoying.