I figure that all sites, even those on the announced scheme must have had their first unannounced now.
I remember my first unannounced audits, I think they were v7? Whenever the UK retailers started to insist on it anyway. My first realisation was it wasn't as bad as I imagined. But then the auditors were pretty new to it then too and I think a touch more lenient.
If you've just gone through your first unannounced audit in the last year or so, how did it feel vs. the announced scheme? Would you consider going fully unannounced as you have to every three years anyway?