Slow charging, not rapid, and almost always
It is the decision that saves the most money and the one most people frame backwards. The guest leaves the car for eight to twelve hours: they do not need rapid charging, they need it full by morning. With slow charging, the same available power covers many more points, the installation costs considerably less and the car charges just the same.
Rapid charging only makes sense in roadside hotels with short stops, and that is a different project.