All the preparation and mental rehearsals. I go stupid. Equipment setup I make just about every mistake I can. I listen to the game plan audio tape for about a minute. The trouble is, the tape says to do these things faster than I can actually do them because I have recorded it by just reading them off the list.
Totality is observed visually only very briefly, with the binoculars.
I look around at the landscape, also very briefly, and glimpse some red Sunset colors somewhere on the horizon. I hear roosters crow at 2nd and 3rd contact. I think I put Fujicolor 400 in the 5 inch at mid-totality. I have a lot of trouble reloading the cameras, not because it is dark, but because the cameras are pointing straight down as the Sun is nearly directly overhead. I forget to take out any of the five flashlights that I have brought along.