Indeed the OSGeo booth is a picture of light and happiness; the calm before the storm.
But alas all is not well ...
Turns out the much anticipated OSGeo Live USB sticks arrived with all the correct information; but no master boot record.
A work party was quickly organised; those who were confortable using DD without wrecking their computer were quickly put to work. Alas I was not to be trusted and marshalled some fix-it utilities onto a couple of sticks (so the workshop computers could be put into service when they became available).
In any case the result is a fab photo of the booth full of volunteers - welcome to FOSS4G.