Do a pass on the ice with the Zamboni machine before the event starts and then put the beer in the Zamboni machine full of ice. -- Some people don't know what they don't know.
Do a pass on the ice with the Zamboni machine before the event starts and then put the beer in the Zamboni machine full of ice.
This sounds like the best idea! Clearly very effective and not a lot of stuff to carry around. Even if you have to dump the ice from the Zamboni in a pile it would work great.