Hi Mr/Mrs Chapman. I am also on this voyage. Disembarkation will usually commence from around 8-8.30am with the 'Self-Help' going first - this is available to all guests who are able to carry all of their luggage themselves without any assistance from the porters. Thereafter, passengers are disembarked according to their Deck Number (unless you are in the Grills who will have priority after the Self-Help). Past experience suggests that the ship will have been "emptied" by 1030am. I look forward to seeing you aboard ! Tim.
Ask the travel agent with whom you booked. They can obtain an answer from Cunard.