The Exhibition went very well, great fun.
Had a lot of interest in the Hexakopter from both the public and companies. Now, if only I had a penny for every time I heard someone say "Look, it's got a go-pro on it!"...
On the two days I was there (Thursday/Friday) I flew the Hexakopter around the UAV showcase area, a large netted area in hall 3. For various reasons the other demonstrators had to pull out so I ended having the whole test area for myself for the entirety of both days!
Unfortunatly, due to a lot of WiFi interference I couldn't fly it autonomously, so got a lot of practice hand flying it.