Fredo and Deanna showed up at the communion party alone. He had no men. I believe it was deleted, but I know that I have watched the scene of Fredo's arrival. If I'm not mistaken, they pull up in a sports car (perhaps a convertible?) and Fredo warns Deanna to behave herself because she's going to be around some of "Kay's classy friends". Fredo had no men with him.