When Charlie discovers the final Golden Ticket at the sweetshop, the shopkeeper's at first just awed and overjoyed to bear witness to the find, but he proceeds to tell off the many bystanders offering to buy it off of Charlie. He then tells the boy that he's glad to see someone who clearly needs some good luck in his life actually get it.
Grandpa George, who up until this point has been pessimistically talking down Charlie's chances of finding a Golden Ticket, talks him out of selling it. "There's plenty of money out there. They print more every day. But this ticket, there's only five of them in the whole world, and that's all there's ever going to be. Only a dummy would give this up for something as common as money."
In a sweet lift from the novel, before the boat ride Willy scoops up a ladle full of the chocolate river, and shares it with Charlie.
Wonka's father: All these years, and you haven't flossed.
Wonka: Not once.
To clarify: Wonka's father Wilbur was a dentist who regarded candy of all kinds as a waste of time. He only let his son trick-or-treat to know what to expect, before burning the candy he collected. Once a chocolate survived unscathed and Willy tried it, leading him to become a chocolatier. This caused the falling out with his father. On the walls of his surgery however, was every single newspaper clipping about his son since the day he left. His love for his son overrode any sense of anger he had at his act of rebellion and natural dislike of all things sugary. Aaaawww.
There's also the touching awkwardness of their embrace, which allows the viewer to notice the subtle similarities of their outfits — both are wearing gloves at the time, and their vests are the same style. Much as Willy Wonka tried to put his past behind him, it was unconciously informing bits and pieces of his behavior all along.
And also the small but touching fact that Willy Wonka was always keeping his teeth in mint condition by brushing them everyday because he knew that's what his father would want.
2013 Stage Musical
There's an Exact Words twist in the late going that leads to an unusual, subtle heartwarming moment. It turns out that with regards to the lifetime supply of sweets, one Everlasting Gobstopper qualfies as such. Charlie is willing to accept this, and with a little thought, this suggests that he's not only grateful for any gift, no matter how small, but can understand the giver's thinking (that, contrary to Grandpa Joe's assumption, it is not a trick but simply Mr. Wonka's unconventional way of keeping a huge promise).
The Eleven O'Clock Number in this version, as Willy Wonka takes Charlie up in the Great Glass Elevator and reveals that the boy's won the factory, is a lift from the 1971 adaptation: the iconic "Pure Imagination". The placement of the song this late in the show, as the culmination of this show's overarching Aesop about the transformative power of imagination (Charlie's Cheerful Child nature despite his meager circumstances owes a lot to it, for instance), is touching enough, and Douglas Hodge's performance on the cast album is incredibly warm and wonderful — in every sense of the word.
There's something adorable about Grandpa Joe, who's Fun Personified in this version, becoming the official taster and an honorary Oompa-Loompa!
The Reveal at the end — the tramp was Willy Wonka — throws a goodly chunk of the preceding action into a warmer and fuzzier light; it turns out that the path to the happy ending began simply because someone's soul was moved by a poor boy's kind, appreciative, imaginative nature.