After Mikey tells them he doesn't have the tickets he'd promised, Jenny steals a bottle of booze as she and her friends leave his apartment. In the corridor pulls the cork out and spits it to the floor, but when they're outside walking on the pavement, the cork is back in the bottle.
At around 40:27 Hype is holding the joint when Erin says she has to go to the bathroom. 1 second later he tells her to give her the joint first, which she is suddenly holding.
At around 16:30-16:45; Jenny gets a call from Rolling Stone and her phone is visibly at the homescreen.
In the very first scene inside the bar, right when the couple arrives, a boom mic is visible above their heads.