It takes 3.5 hrs from tunnel to spa
well signed just follow m way to Brussels, as you get to Brussels the signs tell you the road to follow - aachen M42 I THINK, as you approach a total station you need to get in the inside lane which can be tricky
camp sites
just turn up, we did for FIA GTs, there are a number just north of the main entrance
otherwise park up, and just walk in with tent and pitch in the woods, you can park on road near the r'bout to the main entrance though it says not too, we did for part of the GTs
take a bike as there is a concrete section path around just about the whole circuit
excellent views, boudins at 2.5 euros were excellent, though there may be a price hike