If you are just looking for shopping, casinos, wedding with Elvis, or go show stay in LV. But not only it is also surprisingly family-friendly city.
If you want the Miracle Mile/Rodeo Drive, stay in LA. In L.A. the weekends are a bit more fun anyway, whereas in Vegas it's always fun, but during the week it's not jam-packed.
People often ask about how they can get from Los Angeles to Las Vegas. This is a roundup of the ways you can do it. Prices are current as of August 2009.
Los Angeles Road Trip: