It should not only help you beat some traffic, but you'll be guaranteed to check out the great pre-game ceremony planned to celebrate the last season's Giants NFL Championship along with some Giant greats from prior seasons.
Carpooling is a great idea, and mass transit is encouraged, though I have no idea what kind of mass transit other than buses is available to get there.
The parking lots will open five hours prior to kickoff. If you happen to work in the area, you might want to plan an alternate route for that night.
Parking on the Meadowlands property is by paid permit ONLY. Anyone with paid permits should use the satellite lots in Lyndhurst.
Tailgating is going to be limited to the space behind your vehicle. No more taking up multiple spots.