Beware of the mega-conventions

Not surprisingly Las Vegas is the city of choice for many convention planners. Most of these won't have much of an effect on the crowds, but some of the largest ones put a lot of extra people in town at the same time. It's worth running a calendar search at the Las Vegas Convention and Visitors Authority site.

The Consumer Electronics Show, held each January, is the largest. If your visit coincides with this convention, you'll have much larger crowds to deal with.