The only thing that saves it are the performances by the many familiar faces that star in it, which were mediocre at best. Would have been nice if there was more of an actual story or point to the thing. Every 10 minutes or so I was saying to myself "Is this going anywhere?"
I liked the songs they used (respectively), but I felt most of them to be very intrusive and distracting from the story. Especially that riff with the strings that would play at the beginning or end of almost every scene. And there were some scenes where complete silence would have served so much more to what's going on, for instance when that pizza delivery kid was stealing the rest of those drugs while we watched the dead guy. The music killed that scene.
Also, I think the writers/directors have some kind of hostility towards women which is displayed time and time again in this film. The way the women are portrayed is as if they're stupid and clueless as to what's going on. The anal sex scene, the brother pushing his sister to the floor and the girl getting punched towards the end just seemed like a way for these guys to express their own short comings with women, and I viewed it as borderline degrading.
And that one actor Jorge Garcia, his random Spanish words mixed with his English dialogue didn't seem to make sense, and I speak Spanish fluently. No one throws in fully conjugated and otherwise unknown Spanish verbs while talking to monolingual white guys.
I thought the look was alright. The lighting of the party at night kinda made it hard to look at, but it emulated the real life lighting of a party like that I suppose.
So yeah, 5 out of 10 for me. It probably could have been better if they'd gone through a couple more drafts of the script.