http://www.lemans.org/2003/24auto/pa...aires_gb.shtml
This link has the schedule and for most of the day there is discover the pits as a direct translation. I asume that this means the pits will still be open all day on the friday.
Although reading again there seems to be an indication that there are pit walks on Wednesday and thursday thus meaning we can still do that and see the drivers parade and everything else.
Rick