In the early 1980s mum took four kids to a convention in Sydney. It was pouring rain for most of the four days, and the seating was mostly outside. We all sat there in the rain with disposble raincoats on. Mum wouldn't let us get out of the rain, and gave a stern (almost crazy) look on her face if we even suggested it. The rain was that bad we coudln't even hear the speaker.
I ended up getting a the flu then a lung infection and took a few months to recover.