Diana & Bruce
Bruce was always aware of who was in the bar so he knew that Diana was there. Sara was there so he wasn't helping on the floor like he would step in to do when she needed time away but he tended to come by and see how things were doing even if he didn't have work to do.
Diana being there was likely to check on multiple people at once. She was friends with several of the people there tonight so Bruce didn't fool himself that it was all about him. But he did admit she was likely there to check on him as well.
"There will be a good deal of drinking the next few days." He leaned on the bar next to her after walking from his office area to join her.