Sark orders a *very* expensive bottle of wine at the Parisian club. He requests Château Lafite dix-huit cent soixante-dix. Lafite is one of the world's fabled wines, a premier cru Bordeaux. Sark ordered the 1870. Which in a restaurant would likely cost upwards of $10,000 a bottle, minimum. Amusingly, the waiter doesn't fawn or keel over with shock, and when he later pours two glasses he doesn't decant, present the cork for inspection, offer a taste... all the usual actions of presenting a wine of that value.
When Will is undercover in Paris, the CIA gave him the name Patrice Laffont. Patrice Laffont is a well-known French actor and presenter.