Years ago there were few public EV chargers, and even then it was common when I used one that I was the only one there. Today there are many more public EV chargers and and multi-stall chargers, its more rare that I'm the only one charging.
There is a regional chain of grocery stores in my area that have level 2 and 50Kw level 3 chargers. They give you 1 free hour of level 2 charging per day (per location, I later discovered). At 9.6k charge rate, its not a huge savings, but I almost always use it when I grocery shop and its nice to come out to the car with 5% or 8% charged added.