Josh Lyman is talking to a campaign worker, and tells him he needs an office set up by November 8. Since they are six weeks away from the election this would be impossible. He meant October 8.
Josh gives instructions for Santos to order his cheese steak with sauce and "Whiz." In Philadelphia, cheese steaks are not made with sauce.
Kate Harper wears a black dress to the wedding. It is considered improper etiquette to wear black to a wedding, more so for a White House wedding.
The French ambassador replies with bonjour madame when greeting Ellie. As this is before the wedding as she is still an unmarried woman and should have been referred to as mademoiselle.