Revealing mistake: At the start, young Chas takes a sip of drink in his office. He doesn't take anything or even pretend to swallow.
Continuity mistake: When Richie returns from the hospital and enters Margot's tent you can see a few toy cars by the record player. The next time you see the record player they are gone. The next time they are there. This happens continuously during the scene.
Margot: I think we're just gonna to have to be secretly in love with each other and leave it at that.
Trivia: In the closeup of Chas' hand with a pellet lodged between its knuckles it's not Ben Stiller's, but Andrew Wilson's hand, brother of Owen and Luke Wilson. When they were children, Owen fired a pellet gun at Andrew's hand.