Thursday/Friday are practice days. There are 1 hour "slots" where the airspace is closed for practice, interspersed with 1 hour periods where arrivals and departures are permitted (and practice is carried out beyond the aerodrome). Never meant to be a spectator day.
Saturday was unfortunately effected by the high winds and dust (and a less than effective Display Director!).
Sunday benefited from the overnight rain and more benign winds (even if it was from the east - quite rare).
Some valuable lessons have been learned by the organisers that will hopefully be applied to the next show...great to see they were already advertising 2012...even if I will have to pay to get there!!