We are not setting up a "room block" with Mandalay Bay.  The discount you get isn't very good.  Actually, if you book a package air/hotel deal from popular travel sites you will get a better deal!  We will be staying at Mandalay Bay the entire time; however, we ask that our guests stay wherever they would like!  The most convenient locations would be Mandalay Bay, The Luxor, or The Excailbur. 

I have been told that The Luxor and The Excalibur are connected to Mandalay Bay via walkway.  If you would like to see pictures of the properties, their websites are:

Mandalay Bay

The Luxor

The Excalibur

We booked our hotel and airfare through travelocity.  Through my comparison, they had the best rates on air/hotel packages.