I found some amazing behind-the-scenes pictures on the writer, Matt Drake's instagram. There are no pictures of Rupert, but it does give a good idea of what the film will look like. I'll put description whenever it's something I recognize from the film.
This is when Charlie is driving in the taxi from the airport to the hostel - but it takes forever to get there because he sees Gabi crying in her car and jumps in her car instead (and witness the ambulance with her dead father's body in a major car crash etc. etc.). The taxi driver is really weird and makes another appearance after Charlie is hit by the car (as we saw in the clip).
This is part of the climax of the story. Charlie is completely defeated and considers giving up Gabi, but his mother appears again and convinces him to go after her. He then charges toward Gabi and Nigel's car where they fight.
The ambulance truck and drivers after the crash. The drivers crashed because they were getting high while driving. So weird.
Weee!! An actual shot from the film. This is part of the flashback sequence explaining Gabi and Nigels's past. Nigel was hurt and had to recover in a room from which he could hear Gabi play the cello every day and therefore he fell in love with her.
Nigel's gangster trunks.
This has to be from the theatre where Gabi plays the cello.
Look, look! It says Karl - Rupert's clothes in the film... unfortunately it's impossible to see
I'm guessing this is the titty bar Karl NEEDS to go to...