The audio credits state that the role "William was played by Maurice Marsac." However Mr. Marsac's character was only referred to as Maurice.
When Ricky voluntary quits after denied the raise, he would forfeit any right to unemployment money, after telling Lucy he is going downtown to get his check from the unemployment office.
Two errors emerge from the phony reservations. Lucy reserves a table for eight people as Mrs. Worthington Proudfoot, but when she arrives at the Tropicana in that role the maitre d' seats her at a table for four. Second, the last two reservations the maitre d' makes on the phone before saying the club is booked are to a Mrs. Bennett and Mrs. Thompson; but Lucy tells Ethel that Harry and Bess Truman got the last reservation.
When Lucy, Fred, and Ethel leave the night club the final time dressed as women, they shift their hips almost in unison as the music swells. The first time they leave the night club as different characters, Fred mistook this exit for the last one and is the only one that shifts his hips (yet dressed as a man in a suit).