Here an event guide for Las Vegas: http://las.vegas.eventguide.com/ . Note that the listings are a bit tourist-y. If you want off-the-beaten-path stuff, it might be wise to get/read online a local newspaper. LasVegas.com has a listing of their events online. Vegas is home to a number of differnet trade shows each year.
Las Vegas shows are listed on sites like Time Out which also has reviews of current shows from professionals and paying customers. Alternatively one can look on the Go Vegas website which offers a fully up to date listing.
One can find a listing of Nexstar events that are approaching on the official Nexstar website. A dedicated agent will be happy to help you find more information on their official website.
You could find a listing of local charity events by looking in your local newspaper. Your local newspaper will most likely be the ideal place where people could post their events.
You could probably find list of events and shows in Las Vegas, Nevada for August with your local travel agency. You could also look on the web for Las Vegas events and shows for the time that you are there.
One can find a current listing for condos available in Arlington on the 'Zillow' website where they have 358 listings. One can also find such listings on 'Trulia'.
You can visit www.craigslist.org for a listing of homes for sale in the Las Vegas area. You can also try looking at www.realtor.com.
You can find a list of family firendly shows and events in Las Vegas by visiting www.vegas.com.
There are several places one can find a listing of upcoming concert events in the city of Atlanta. These websites include Ticket Master, Atlantic Station, Access Atlanta, and Eventful.
the newspaper or cnn.com
www.wbir.com
I could not find a listing for a four bedroom suite in a hotel in Las Vegas. However, if you try www.vacationrentals.com, you can find a four bedroom house to rent per night in Las Vegas.