Last year i did the Luxor visit, but I set it up before my Port Ghalib liveaboard. My two cents of advice would be (1) drop off your gear at your hotel, give the bellhop a few bucks, and they’ll keep it safe until you return to check in, (2) do NOT expect a real “Egyptologist” on any tour, regardless of how you booked the tour, as most of what you will get is very superficial convention wisdom learned from the same guidebook that you could buy at any gift shop — so you might as well just find a cab driver with a sense of humor, and a good guidebook, and do your own itinerary at your own pace, and (3) take MASSIVE amounts of water with you any time you head out to see the sights. It was 112 degrees in the shade in Luxor during our trip last May. At least 20 degrees hotter than at Port Ghalib.