At the wedding banquet, the girl who speaks to Dustin Hoffman and Emma Thompson ("You do know this is the children's table?"), is played by Gaia Wise, Emma Thompson's daughter. Director Joel Hopkins's daughter is also seated at the table.
Emma Thompson and Dustin Hoffman worked so well together in 'Stranger Than Fiction (2006)', they wanted to do another project together and got involved in "Last Chance Harvey".
Harvey arrives at the restaurant with an electronic tag still attached to the sleeve of his jacket, as seen during the taxi scene. Inside the restaurant he is introduced to his daughter's friends but he doesn't shake hands as he doesn't want the people to see the tag, but after a while there is a shot where the sleeve doesn't have the tag anymore.
When Kate leaves the wedding and is standing in front of the elevator, there are 2 rooms between the elevator and the room Harvey goes into to play the piano. When he starts to play, the camera picks up a shot of her peeking into the room where Harvey is playing while she is still standing at the elevator. This is impossible at the room Harvey goes into is clearly down the hall from the elevator, not the room next to the elevator.
Kate Walker: I'm not gonna do it, because it'll hurt! Sometime or other there'll be, you know "It's not working." or "I need my space." or whatever it is and it will end and it will hurt, and I won't do it.
The official website for Last Chance Harvey can be seen here.
Q
Is "Last Chance Harvey" based on a novel?
A
No. Last Chance Harvey is based on a script by English film-maker Joel Hopkins, who also directed the movie.
Q
What book was Kate reading?
A
Throughout the movie, Kate is seen reading or just carrying a paperback book. The cover shows that the author is one Anita Harmon. The title appears to be something like A Wayward Note. Since neither the author nor the book are important to the plot, they were made up for the movie rather than using a real book and then having to secure and pay for the rights.