If your night-owl clients are off to Saint-Tropez, the French Riviera playground, we recommend sending them to the ultra-luxe club, Les Caves du Roy. Located within Hotel Byblos, this internationally known hotspot is top pick among the glitterati. It was renovated in early 2009 (its first renovation, we are told, since 1979). Sporting a copper, resin and glass look, the club has added padded leather banquettes, new LED-lighting and a brand new sound system so that the party can continue through the wee hours. To make sure your VIPs make it past the velvet rope, contact Deputy Sales Manager Pascale Fontaine (firstname.lastname@example.org).