The gathering broke up after another hour of camera people running around to take shots of everyone mingling.
Karl's reluctance to mingle actually made their life easy, as he was with a group in the background of many shots, and he just had to move between them for individual photos. They didn't need a photo with everyone, just enough that they could fill multiple articles with whatever fit.
In contrast, the hyperactive ones like Lotus were harder to properly photograph because they kept disappearing, or appearing with the same people over and over, so you could never get a shot with the people you wanted.
They talked to a hundred people in the evening, but every time the camera caught them, they were with the same ones. That would just cause scandals if they posted too many.
