hi ian,
more information here:-( old thread but will give you some idea of track size etc )
http://www.oople.com/forums/showthread.php?t=30904
tracks are mostly primafelt carpet with some slippery floor sections and added features. classes run 1/10th 2WD/4WD, micro and sometimes trucks
there are some tables available ( if you arrive early) and plenty of electrical extensions for power.