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.
You can find a listing of current Las Vegas Events at www.pcap.com/lvconv.htm. Another good website is las.vegas.eventguide.com
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.
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.
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.
The best place to find a listing of the top gay clubs in Las Vegas would be to find a site that lists tourist attractions in the area. Among them should be listings for bars and lounges.
You can find florists in Las Vegas by visiting www.yellowpages.com, www.dexknows.com, and las-vegas-florists.flowerpetal.com.
Las Vegas Review Journal, the Las Vegas Sun
Las Vegas will take book on pretty much anything. And if you can't find book on it already, you can probably find someone to take it.
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.
If you're looking to rent from the owner, there's quite a few options. Currently, the best listing out there can be found at http://www.vacationsfrbo.com/
There are around 23 different dealers in the Las Vegas area that have listing for new or used Honda Odysseys. Calling these dealerships to see exactly what they have in stock will be the best way to find what you are looking for.