One ridiculous implausibility and another baffling element -- SPOILERS!

First, where did Robbie get his bottomless vodka container? He fills up a bottle that would appear to hold a half pint or less, but then we see him pour substantial amounts from it into an unending series of beverages he is constantly consuming throughout the course of an entire day. I do not accept that we are to assume he has refilled it at some point. First, he has no opportunity to do so, and second, that would violate the perspective the movie has established.

Even more baffling is the behavior of the police after Robbie is named as the one most directly responsible for Abbie's death and therefore the next target of Rachel's revenge. His partner just tells him to go home, and neither she nor any of his fellow officers thinks to put him under guard or provide any protection. After following a trail of bodies across the city, the cops have just watched a brutally efficient pair of assassins in effect confess to the murders of seven people on a video which shows them actually committing two of those murders -- a video that was delivered to the station addressed to Robbie and clearly intended to mark him as the next to die.

In these circumstances. the police would never have allowed Robbie to leave the station, and they would have immediately dispatched a team of officers, probably SWAT, to his house to collect and transport his family to a secure location. Anything else is totally absurd. The magic bottle started bothering me a little after he poured about the fifth large dollop from it, but this idiocy took me completely out of the movie.