It's shit and yes they all look scared/ill/cold/upset rather than just drunk/hungover. As if something has gone really wrong for them, not just a night out. Creepy as fuck.
Of course HN-woman looks happier - she's HOME. They'd all look happy if they were at their own front door safe and sound rather than roaming the streets.
Target audience for this = people who want to laugh at "fat chavvy slags" i.e. woman-haters.