Just to take up on ft101's point on previous flights from the Scotland to NZ I have had an overnight stop in Dubai and so had plenty of time to freshen up before the flight to Australia. I've always taken a shower about 3 hours from landing in Sydney followed by breakfast.
For the first time I am taking the new evening flight from Glasgow and transferring to EK406 to Melbourne and Auckland. Landing in Dubai at 08:15 and departing again at 10:10 I am a bit worried that there will be no time for anything other than going gate to gate particularly if we park at a remote stand. (Anyone have any thoughts on how busy security is likely to be at that time?)
My plan is to take the first available shower slot after take off. Probably I'll have another on the ground at Melbourne or maybe even over the Tasman. Breakfast before landing, in the lounge and again after take off is at least two breakfasts too many but I do love a shower on the A380.