I love these portable ice makers. We used one for years, but my wife is eccentric and doesn't care for the type of cubes that these make. She loves the "nugget" style ice like they serve at Sonic. So we have one of these commercial machines in our garage.
Before every trip, I bag up 40 lbs of ice and put them in the RV's freezer. She was afraid we'd run out on our last trip (eight days on the road), but we did just fine.