Las Vegas: Less Sleaze, More Swank

If the line is too long or you're just too cheap to shell out $1,000 for Mumm, walk (cabs take longer at this time of night) over to Tao at the Venetian. A larger dance venue offering equally good soundtrack of dance music that rolls through 4 a.m., the club is usually easier to crack and can even be bought if needed ($350 bottle service).

New for 2007 is LAX at the Luxor. Super-famous L.A. transplant DJ AM -- Nicole Ritchie's ex-fiancée -- offers a Hollywood-themed dance club with hosted events by Britney Spears and Christina Aguilera. Unlike L.A. or New York, Vegas nightlife is more welcoming to all ages and seeing a crowd of 20-something party girls should not deter more mature visitors. Plus, seeing Britney Spears on the dance floor will surely land you equal talk-time with your co-workers chatting about St. Bart's at the Monday morning water cooler.