I am shopping today, and I am getting $125 for a shop I normally get $75 for. I just told the scheduler, "it's a holiday weekend, and you expect me to ruin a 4-day weekend for $75?"
So, yes, $1 a mile sounds good to me -- never hurts to ask for more. Think what you'll be dealing with -- these audits won't go quickly because of the huge crowds; lots of traffic, etc., etc., etc.