I don't know how much opportunity there will be to speak, the form appears to be lectures all day and an hour for questions at the end. If things overun as usual that may be that. But as you say Jane, I think having someone there is important. And of course things do get said at lunch !
Avin said all that the list of non-conformists I saw today is as formidable as could be expected in the abscence of an HA representative. There is sufficient clout and a voice there as and when etc.
VBB