Other mistake: At the party after award ceremony, we see the awards are dated 2012. Artie says he is 58, meaning he was born in 1954. He says Alice was born when he was 23, so in 1977, and she says Harper was born when she was 26. This would mean Harper was born in 2003, but she says she's 12, meaning it would really be 2015.
Other mistake: How could Argie and Barker get round the skateboard track and up the stairs to the platform, especially with Barker, in less than 5 seconds?
Continuity mistake: In the subway toilets, Argie checks two cubicles and looks in the third one. However, in the next shot, he is looking in the fourth cubicle.