<rant\>
While I sympathize with your issue, I cannot agree that because of this incident, which could have been avoided by you adhering to the posted dining times in Luminae, is a cause for Celebrity to extend the hours of Luminae. Plenty of other Luminae guest, ourselves included, are able to arrange our scheduled so that we can arrive and eat while the facility is open instead of expecting the facility to cater to our desired hours.
On our last cruise on a couple of occasions we decided to take advantage of the fact that we did not have to get up early to go ashore and did not leave our room until after Luminae had closed. We simply went to the Elite breakfast which was open until 10. Granted it is continental breakfast only but it was a decision we made.
So if YOU decide that you would rather sleep in than wake up in time to dine in Luminae then you need to be willing to accept the consequences of YOUR decision, and should not expect the dining facilities to adjust to your singular needs.
</rant>