We r booked from 30th oct to 13th nov, only so long so we can take our time with three kids, and DD3 is desperate to see IASW, which was closed last time we were there for Halloween two yrs ago. Are the crowds heavy then? We have annual passes from three weeks a DW last year, so we are trying to make the most of them before they run out, coming from Australia we need to get good value for the money! Also surprising the kids, so any suggestions about when is the best one to tell them would be great! DH says on the way to Sydney airport, I think on the plane, but my parents think after we arrive at the hotel! I'm struggling to keep the secret already!! : )