I remember some years ago we ran with snow banks on driver's left entering turn three. Not sure I'd want to go sideways into that block of ice, but it was there, nonetheless.
Same with the infield....well, maybe it was just mud from all the snow melt. We could paddock anywhere that wasn't suppose to have grass on it. I think it will be crampted, but OK anyway.
4"-6" on the track? That's not so bad. It is less than I expected at this point. Snow/rain is in the forecast for this weekend (Friday, April 4, I think). It should be mostly rain, so that will help some. Not sure what the long range temperature forecast is for the week.
I think it will be OK, though (I've said that since February).