I bought the remote thermometer, and I have been running the freezer. First I ran it empty. Very quick temperature changes. Then I put 30 gallons of water in it and let that freeze real good. That's nowhere near full, but I figured it would serve as a bit of thermal mass. And of course, the freezer would not stay full all week on the Playa!
But.... Disconnected, it went from 10 F to 30 F in a heartbeat. Ambient temperature about 90 F in my barn. So it will need to run full time.
But by golly, we are going to have ice cream all week!