Chuck...
Don't reveal too much about the swearing in ceremony. We've changed it for the NEWER Bubble Party Providers.
As far as the machines go, I never thought to cut the wire. I just usually am very careful with removing the tray. Usually when I breakdown, I remove the trays from the machine first, pour the leftover juice into the Bubble Juice containers, then angle the machines in an upside down "V" to drain any reside juice and flip the trays over.
While the machines are sitting, I break down the audio equipment, then pack up the machines and depart.
One more tip: I have been using the same machines for 2 years and they still work great. But after the first season, i notices that they cosmetically need a touch up. Here's a tip:
Go to an auto parts store and buy paint stripper (It's an aerosol can), spray primer and black paint. Use the paint stripper on the tops and the chutes to remove all of the old paint. (Follow the directions and wear gloves....this stuff is acid that will burn your skin). Then put on a coat or primer, let it dry, and then paint the machines with black spray paint.
This will make the machines look new and ensure longevity.