I always have this recuring dream that I have shown up for a big race and forgotton some key bit of eqipment - shoes, shorts etc . . and the whole thing has to be called off. Luckily, that has never happened to me.
I had the dream that I couldn’t get my wetsuit on for my first IM. By the time I had it on, the leaders were coming out of the water. I started out anyway, and was swimming in molasses-like slop…couldn’t see very well, had very slow turnover, had a hard time breathing, got lost on the swim course. You know, it sounds very close to my REAL first IM!