money solves everything, hollywood style
I loved the premise of the movie and I loved the actors - especially how the supporting actors were allowed to shine. Hearing a whole soundtrack of Lennon songs (master recordings, not copies or covers) was pretty incredible.
But I was left feeling a little shallow by the fairytale aspect of how Danny's money was the quick solution to the story. If Danny hadn't been this wealthy Rod Stewart character, he wouldn't have bought his way into his family's life or done anything for his son & granddaughter's problems, simple as that.
Ironically, the real letter from Lennon was a message arguing that it's ok to get rich.