Hi,
Not much night life for the teenagers in Luxor but lots of the history is here. Maybe a few days in Hurghada after the cruise & back to Luxor for some sightseeing before you leave. Hurghada is about 4 hours drive from Luxor & you travel there in a convoy.

I think that El GOuna would be better than Hurghada if the kids want to go off and do their own thing at times. El Gouna is a private, hassle free resort,and am sure you would feel at ease with them going off on their own, lots of cafes and bars with pool tables etc. There is also the Mangroovy Beach party twice a week which is fun and safe. Hurghada... I wouldnt like mine wandering about their on their own to be honest. If you are wanting to do Luxor too, perhaps do that first, then you can have a more chilled time in El Gouna and the kids would probably find more do do there.

We stayed at the Arena Inn, which was in the perfect location - a five minute walk at the most from downtown [THomas Cook], and it wasnt the most plush hotel we had been to but other things made it special - no having to reserve beds in the morning, whatever time we went down to the fab pool there were always four beds available for us. It was b and b which is perfect, cause there are so many nice restaurants to eat in in El Gouna and the Marina area - the kids loved this. We would, and are considering going back to the same hotel next year. THey provide a lovely free airconditioned bus to the beach [hourly] and do everything in their power to make your stay special. Also rooms have PLENTY of storage - wall cupboards, worktop and some have a sink in the rooms too. Also a bus runs from there on party night in the Marina on a Friday, which is only about ten minutes away I reckon, so as I say, there are plenty of options. El GOuna itself is quite unique, set within blue lagoons and lots of character considering it is a man made resort.

Hope this helps.