Thanks - I've seen tents there.  I'll just have to do without the showers at Eau Rouge and take the opportunity to exercise my German.

An inconvenient meeting for next Thursday has just been cancelled, so I've taken opportunity to take holiday leave from Thursday afternoon to Monday, but the Eau Rouge campsite at Stavelot, where I've stayed the last 2 years, is fully booked.  Does anyone have any good ideas as to where to stay?  If not, we'll have to pitch tent in one of the car parks.