Ready2Roll just sent out an email update saying that the rain on Tuesday flooded parts of the fairgrounds in La Grange, and the suppliers are currently moving tents to try to accommodate everyone. Reading between the lines though, it doesn't sound good if La Grange gets anywhere near the predicted rainfall over the next few days, especially Friday night like most weather reports are predicting.
My main concern though is the threat of thunderstorms in La Grange on Saturday night. Don't want to be in a metal-framed tent in an open field during a lightning storm.