There are only eight cast members in the whole film. As such, they have stated that they felt like a family, and would take weekend trips together.
The cast formed such a close bond that they all got matching tattoos of a blackbird on the last day of filming.
Despite playing an American family, Susan Sarandon, Rainn Wilson and Bex Taylor-Klaus are the only actual Americans in the cast. Sam Neill is from New Zealand, Kate Winslet and Anson Boon are English, Lindsay Duncan is native to Scotland and Mia Wasikowska is Australian.
Rainn Wilson joked that he said yes to doing the film after discovering that he would have a sex scene with Kate Winslet.