I've never used CD before and when booked I didn't specify any particular time.... just left it at the Emirate default 3 hours prior to departure.
We are on a 6am flight from SYD next Sunday, so 3 hours prior to departure is an excessive time, and a ~3:30am pickup ( about ~35 mins to the airport) would would be better. I gather the CD service provider phones on the day prior to departure to finalise details... is this the time to change the pickup time, or do I need to cancel the existing CD booking and do a new one?