A young-ish guy, clearly works out - maybe he runs his own gym or PT business? He's come to a transport hub bar with a laptop to do some work. Perhaps his gym is nearby and is too noisy to work there? If he was travelling he'd be dressed differently.
He drinks Guinness and sits near another table with a family at it. He doesn't seem to notice or engage, but one of the grown-up daughters keeps looking his way. Perhaps she'll buy him another drink and they'll have a long and happy life together.
Perhaps not.