Yeah I tried to stay always just to the side of the crowd, I'm aware of the dangers there.
I had no problems at all with Solo. Until now I have only flown Birdy in these sort of conditions so I can't really compare it to hot weather at sea level. I did soak the props in antifreeze but on this day temps were on the positive side for sure so no worries with freezing. I'm guessing battery life will increase at sea level, I landed at 25% after about 12 min. The location I was flying at was 2300m. Taking off in snow is not problem, just stamp out a little spot. Landing is different as its very easy to flip her when landing as one leg can easily sink. I always just hover and then grab a leg and turn off the motors.