Well when the Red Cross Ball took place back, the harbor in Monaco was filled with celebrities and their yachts. Even though it's not a Red Cross Ball anecdote, I remember reading Caroline say at this year's Rose Ball, that for 1964's Rose Ball , the performer (I think it was Sammy Davis Jr.) had gotten ill, and that night among those attending the Ball was Burt Bacharach, so he hopped on stage and saved the night. Then for an early 70s Red Cross Ball, the same happened and Josephine Baker saved the night once again. I guess if that happens nowadays, due to the caliber of the guests that everyone is mentioning, the Ball would somehow be left out with a show, sad.
I agree where was Roger Moore, Gina Lolobrigida, Shirley Bassey, and the others which are Ball veterans. For this year they could have gotten on stage previous Ball performers that are still alive like: Tony Bennet, Shirley Bassey, Michael Bolton, Liza Minelli, Tina Turner, Rod Stewart, Lionel Richie, Diana Ross, Elton John, and Paul Anka just to mention some. Imagine what a show it would have been, a great celebration for the Ball's 60 years and I'm sure a lot of Ball veterans and frequent guests would have showed.