Ice and Dry Ice
Spent a good amount of time on the phone last night scoping out sources of ice and dry ice availability in Las Vegas. The major supplier appears to be Reddy Ice, 1201 Searles Ave. Phone 702-649-8002. I believe this is the supplier that I used in 03, but not sure. Just down the street from the factory they have a major distributor Anderson Dairy, Inc. 702-642-7507 who are open 24/7.
In 03 I picked up the biggest cooler that I could find at (120 quart) Sam's Club and filled it with ice and layered about 60 pounds of dry ice on top. We used this cooler for our ice supply which we went into only as need to resupply our other coolers. This worked great and we had ice for the entire event.