Another reviewer did write that as his summary and I would agree with that. You don't have to love Melissa (not only main role, but also script writing duties apparently as IMDb states), but if you hate her, this movie is not for you. It's a character that has a basic concept she has played in other movies too. So you'll know if you like that or not. But you get an added Susan Sarandon to that (amongst other really good actors).

Putting this group together was genius and everyone is pulling their weight. You still have to be able to like the humor/jokes they are spitting, otherwise you'll be left empty. The movie is predictable even if at first it seems not to have a goal it wants to reach. It still has quite some passages that could be better and not everything is completely convincing. But the movie itself is a nice watch overall