To add my thoughts. Seen no evidence of Bees accompanying queens on mating flights. Searched hard for this. I contacted Prof Jamie Ellis co-author of 'Mating Biology of the honey bee' book & Prof of Entomology at Florida University after I read his blog, he confirmed he knew of no evidence of this. The drones fly to different DCA's to the queen from the same hive (also in his book with Lawrence Connor), to minimise inbreeding. I too have witnessed mass orientation flights, which is where the foragers attract the queen back to the right hive on return from mating. Fanning with their Nasonov glands, seen it a couple of times mid afternoon. Like others, don't think mating or orientation flights have any impact on honey crops.