have you tried emailing the hotel direct to ask how much that would be?
if a good rate just print the email and take with you.

There are such a vast choice of restaurants in Luxor, I wouldn't consider tying yourself to eating in one place every night.

Go and try the variety that's on offer....

Have a look at this website for regular updates and reviews of everything that is "Luxor"

http://www.luxortraveltips.com/eating/restaurantoverview.htm