Las Vegas can be overwhelming to any first time visitor or even repeat visitor. There is so much to do and see in Las Vegas. You can spend 2 days sightseeing and not even see half of what this city has to offer.
The Dancing Fountains outside of the Bellagio Hotel, a gondola ride through the canal shops at the Venetian Hotel. Take in a visit at the Freemont Street Experience in downtown Las Vegas. Home of free live nightly entertainment and free light and sound shows.
If you are eager to continue exploring, consider a short day trip either prior to or after the meeting to the Hoover Dam, one of the engineering wonders of the modern world. Also visit the Grand Canyon, considered one of the Seven Wonders of the World.