They're concerned about the heat. They have written a letter and are speaking to Max Siegel.
My take: 6 am is a non-starter. No need to have it that early.
Personally I think they could keep it at noon and then if it is above a certain temp, move it to 8 am a few days before. Usually Orlando in February isn't that much different than Paris in the summer.
But my favorite option is to run it at night. What am I missing with that option?