Fluffy, small problem with Hemswell etc, a noticeable lack of manpower. Only one nearby source and that is Waddo
How about the college of knowledge? To the south is a very busy road but at some inconvenience traffic could be diverted behind the display line for a couple of hours. Other than that the area is pretty clear.
Plenty of willing volunteers there too
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Actually quite a few positives really. There was a huge show, closed to the public, in 1965.