Howdy! Thanks for your great inquiry about hive placement. Surely it's considered that in North America south, or south/east facing beehives is best to maximize sun exposure to the beehive. Bees are generally unconcerned about your mowing as it's not directly endangering the the beehive colony. The one and only concern is that you'll be riding through their flight path (direction from in and out of the beehive), as you might have a few landing on you as you intercept their route. This should also pose no general issue to you, or the bees.