Anecdotally, based on people I know, there may be some truth to that 
Also truthful sounding is his half-hug (which I could picture though you said you had a hard time imagining it, maybe the use of language). Touching etc. has to be on the AS person’s terms to be fully embraced (pun).
Here’s how I see it - and how I think others might be seeing it too. It might actually be an age thing. These people are like people I know or have known. They were cool in college, and were close friends, but they’ve all moved on… mostly to successful lives (Haze notwithstanding) so there was little reason to hold on to all that. They lost their connection to each other, for the most part.
So when they get back together - for what we’re assuming is a selfish reason - they end up faking still being close friends. This is what led to them trying to take Guy up the stairs (this is all my analysis, could be wrong). They got this great idea because it is like something they used to do in college… and maybe it was all fun and games then, but it’s different now… they’re not still close in the way they were (which makes things like that OK, within reason), and they’re not young and fit either (especially Guy, obviously).
So like I said, they’re faking it, and hoping that getting drunk and having a good time will bring back the feeling of close friendship they once had. You can’t fault them for getting together one last time, but their motivations (as best as we can tell) and their actions are not good. I may have exaggerated by saying they’re horrible nasty people it’s just that when you know people like this in real life you get annoyed
Also, interesting that they’re all faking, considering that Kit fakes so much as a matter of course. Of course, Kit is taking everything at face value, so doesn’t realize it.
