Thanks J!
From a short piece in the NYPost, we learn that the guests at Harvey Weinstein’s yacht party included Warner Music owner Len Blavatnik, Les Moonves, Julie Chen, actors Keanu Reeves, Naomie Harris, Rooney Mara, Casey Affleck, Octavia Spencer, Michael B. Jordan Ryan Coogler. Joss Stone was introduced at the event and she performed at the event drawing a crowd on the docks. From a google alert.
Fashion Salade has a photo gallery from the event including a photo of Keanu Reeves with Stone Joss. Note, the figure legends do not line up with the photos. Thanks J!