Bees need water to cool their hives. In the kind of weather we've been having in the Midwest, it's no surprise that they're especially obnoxious. For that reason, I agree that putting some source of water out for them at the edge of your campsite is probably your best solution.

I hope you're having fun, Catrin. Sorry to hear that you still can't ride. Perhaps if you're still sore by the time you return from your trip, a visit to yoru doc is in order. Although if you do have a cracked rib, the doc might suggest nothing other than an OTC pain reliever.