How to know if I need the location addon?

Hi
I didn’t install the plugin yet.
I need it for a very tiny real estate site so I prefer to use the free version in the beginning.
The problem is that the location is a rural zone with very small villages.
How can I test what should be the limits of the location allowed for the free version.
What is the thing that wouldn’t work outside the location? besides the map? the adderesse?`