Did you forget that she was falling down drunk on the dance floor?
What we tend to forget: Perhaps FFC was drunk when he wrote this part of the script. The whole scene is crowded with drunk people: Pentangeli, Deanna, Fredo, Manolo the landscaper, Connie, Geary's wife. Even Michael who never drinks, has champagne during a business talk and wine when they have their hundred-years-toast.
So I'm sure FFC must have been drunk when he wrote this part of the script.
Now hang on a second.. I agree that Micheal, Connie (& Merle), Frankie, Deanna (obviously), were all drinking VERY heavily. We've never known Michael to drink at all, yet he has several drinks throughout that party. However, Fredo is a different story all together. Compared to his condition at Connie's wedding he was completely sober. The Fredo at Connie's wedding and the Fredo at Anthony's communion are two VERY different ppl......almost night and day in fact. He's stone faced and alert during those opening scenes at Anthony's party, his mind is cluttered, and it's not only cluttered with thoughts of his drunken-slut wife. Johnny Ola is going to be at the party, so Fredo has to be very careful not to let on that they know each other. Yes, yes... I'm quite certain that Fredo had things other than alcohol on his mind that day, a LOT of things.
