Re: ATTENDANCE Melissa came in this perfect outfit. She didn't get too drunk but did nurse a few brightly coloured cocktails through the evening, sung along to some songs, and got up to dance.
Sam is obviously there. He's wearing jeans and a plain white tee - neither at Steve and Bucky's level of tight, but not exactly completely out of that neighbourhood either. He is drinking liberally and is open to being plied with alcohol to encourage him into ridiculousness.