Hi folks and thanks for the comments. A few points to come back on:
Weather - we hold the show on the first weekend of September because it would normally be a "dead" weekend. The airshow has always been an event marketed to families, rather than hardcore spotters, and has established itself as the busiest weekend of the year. May-August weekends are pretty busy anyway so the marginal increase in visitors would be less than for a weekend in September. NI weather is a mystery - note the high pressure coming in tomorrow and as for the suggestion about May, I have worked the Raft Race for 5 years running and it has been sunny twice, rainy twice and literally gale force on one occassion. Three of the last four NW200s have been wet or showery. Scheduling does have to integrate with the UK calendar and we've now got ourselves a cosy wee slot in terms of availability.
No-shows - I don't agree that Portrush seems to suffer more than most other shows. Vampire went tech on Thursday, BBMF (except Dak) didn't even leave the hangars in Connigsby because of their weather conditions, spoke to Gnat owners this morning (they went tech on Friday and were repaired by Sat afternoon but too late to make slot at Portrush), 2nd Mk4 Sea King went tech at Aldergrove, no info on Dukes of Cassutt (they were replaced by 2 Yaks by Friday evening), Largs Bay stuck in port with electrical problems.
None are reasons specific to the display location - any no shows were due to weather elsewhere or tech reasons.
Love the pics by the way - I was thinking on the day that b&w shots would look great.