Wait until it's dark, and walk along the entire Vegas strip. I have driven down the Strip, and it just isn't the same. The night life here is amazing. The highlights consist of Paris, New York, Luxor, and The Mirage Volcano. There are a number of prominent hotels/casinos along the way (i.e. The Cosmopolitan, Bellagio, Aria, and Wynn). There is also an amazing water show across from Paris that goes off every 15 min, and the volcano goes off every 30 minutes. If nothing else, there are great photo oppurtunities. The Strip is definitely worth doing at least once.