Right on the first day of Little powerte at 40-degrees in the shade our drinks at perfect drinking temperature.
Outwardly merely the case was a bit warmer (chocolate I would not leave it;)).
The noise, however, is equal to zero.
We had small "Camping refrigerators for 12 / 220V / gas" in use. This Brummer have felt ten times as loud!
As to our campsites everywhere and 220V is applied - we can only express an absolute buy recommendation for our use. The few euros extra investment compared to the 12V-candidates are absolutely justified!