If you want real pessimism... load in tomorrow is going to be a nightmare.
St. Louis is forecast for rain tomorrow evening (for the moment...)
The map of the pits shows no 'prestaging' area for the Load-in "A" that teams can use between the outside world and the pits during load-in. This means that if you show up at 4:30 and it's raining ... you will probably not want to unload things at all at Load-in "A".
Load-in went so smoothly in Atlanta (in the 4 years I've gone) because we could get there early, pre-stage things into the main hallway at 3-4pm, and simply wait for the opening of doors to the pits. No rush, no pressure -- just get there, get in, and relax after a long trip.
So in a pessimists view, there will be a crowd at Load-in "B" (assuming they even let us pre-stage things inside) and long lines at Load-in "A".
Typically I like to execute according to a realistic view ... so two of us are flying in early (1pm) to figure out how things will roll. Yet regardless of how load-in pans out, I'm truly optimistic that the overall experience will be rewarding.