I got a couple of minor stripes the last time... I think they would polish out but I haven't tried yet.
Don't listen to 2001Frontier - his truck looks like Freddy Krueger went after it (Sorry, Chris!)
If you want to wax before you go - do it NOW and then wash it again once or twice... I waxed mine the day before going last time and it attracted dirt like crazy.
Oh - forgot to answer the question: I'm still planning on going late Friday night - but I've got some family issues that may stop me right up until the last minute.
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Warning! Do not sear the top of your neck hole in the molten lactate extract of hoofed mammals.