Large and varied venues for meeting spaces.
Hotel room inventory: 148,433 and although the global list changes, by room count in 2012, 20 of the largest 27 hotels are in Las Vegas.
McCarran Int'l Airport is well positioned with accommodating flights as the 26th busiest in the world by passenger count. The location of the airport is convenient with plenty of ground transportation available.
There are a variety of shows and things to do when not at the event venue.
The Las Vegas convention center is approximately 3.2 million square feet with exhibit space of 2 million square feet and meeting space of nearly 250,000 square feet. The Sands Expo and Convention center has over 2.25 million square feet of flexible exhibit and meeting space. Mandalay Bay Convention Center has 2.1 million gross square feet. There are other smaller ones.
There are many top restaurants, buffets, and catering is readily available, as well as available service staff.
No matter how large or small an event, and what the event features, event coordinators are readily available to handle everything. It is possible to book an entire hotel, or a tower of a hotel when done in advance.
An article shows a Middle Eastern air force [Saudi Arabia, but it is a secret.Shhhh] booked the entire W Las Vegas, a 289-room tower at the SLS Las Vegas, for most of August, according to numerous employees speaking on the condition they not be identified. They said employees are being shuffled around to accommodate the booking.
Because of the available room count, selecting a less busy week can get favorable cost rates.
Also, many affluent and famous people like to visit Las Vegas, and a convention or meeting is a good excuse for tax purposes. It is a reward to the employees of successful companies.