At the moment I am plastic camping scum.
Which sucks for two reasons - Inauthentic, and it means that I'm always a quarter of a mile from the main camp, which sucks for the whole 'community' feel of the campsite.
In my experience though, sleeping on the ground is liable to give me mould and hypothermia. Not had a dry 2 day event yet.
Gonna go authentic sleeping when I have my own tent though. Cheaper and less stuff to carry, and looks awesome.