Help me convince "FHU only" friends to try electric only CG

All we ever look for is electricity, only because we don't have enough battery power or generator. Most campgrounds have potable water someplace to fill the tanks, which may take at the most 15 minutes, and they will almost have a dump station that will take another 15 minutes when leaving. Besides those campgrounds without full hookups don't have any "accidental spills" at the campsite.