My DH finds both his ice machines indispensable.
The one he uses in his man cave when he has company, the other one we use in the caravan when we do long-term camping.
Both our sons like and use their ice machines extensively in summer.
We use bottled water in our machines, and empty and clean them out before storing in winter time.
It takes 12 minutes for the first 24 cubes to form, but all the batches after that, takes about 8 minutes. We also freeze the left-over cubes.
My grandson (2yo) loves an ice-cube in his coffee