As presented, a poly life really doesn't seem like it is worth the trouble at the best of times, and the second family gave me the wiggins a few times. The film left out any sense of a polyamorous community - both examples of new people being brought into the relationships are of monoamorous people being uncomfortable with the situation.
One blogger presents some of the less-favourable reactions from the UK media.
I have the thing on VHS, should anyone want to borrow it.