So far I can honestly say that they do not care about the mowing or weedeating. My friend, who did the weedeating for me last week threw so much dirt up onto the hives that the bees came out and covered the front of the hive, but never, never went after my friend or me. Not one head butt. I am actually amazed by this.
I get onto the riding lawnmower and go back and forth in front of them and nothing happens, ever.
Anyway perhaps one day that can change, but so far since 2006 it has been like this.