me and the girlfriend were in Vegas in January for business....weather was awesome...in 70's....we rented an Ultra from Eagle Rider...waaaay cheaper than Vegas Harley...very, very friendly people...they will pick you up where ever you are at your hotel ...then take you where ever you want to go after you drop bike off....we rented for 24hours...picked up 3:30pm in afternoon that way we had it over night and all day till 4pm the next...was awesome...did Red Rock Canyon, the strip, Lake Mead and Hoover Dam...have fun!
Off the subject but if you go you have to go to the Omelet house for breakfast once. We went there about a month ago and it was the best breakfast I ever had. Its alittle off the strip but well worth it.
+2 for Red Rock Canyon. Also don't miss signing up at any of their restaurants for a Total Rewards card and buying a Buffett of Buffetts 24-hour pass for $44.99, this is too much fun! http://www.caesars.com/buffets/faq.html