That electrician handed you 20 bucks because he knows he broke it. That's not carelessness, that's him paying for his mistake. Most guys would've pretended nothing happened and walked. You got something out of it. The real issue is you left a Leica sitting on a bench in a room where guys are pulling wire. That's on you. A camera like that belongs in a case or on a shelf, not out where a tool bag or ladder is gonna knock it. And drilling it yourself for 40 minutes could've wrecked the threads way worse than the screw was. You got lucky, not smart.

Did you leave the vents open on that tent at all? Those cheap ones trap every bit of moisture and that's what kills you, not the cold. Real frames with old windows work but you gotta crack the glass during the day or you'll get the same rot, the airflow thing is the whole game.