I didn't know you could take a boat from Cairo to Luxor . That might be fun, I was planning on flying Egypt Air between the two.

Two to three days in Cairo, a few in Luxor, then the Red Sea sounds what you want. You can buy alcohol in Luxor hotels but there is no organised nightlife worth mentioning.

Yes , that's what I was thinking , maybe two days in Cairo , and the rest in Luxor.

As you are interested in the night life as well as seeing some sights, I would suggest skipping Luxor and spending your time between Cairo and Sharm el Sheik on the Red Sea. You can find a beautiful hotel to stay in Cairo with a pool, etc. (we stayed at the Cairo Marriott, which also had a casino on site) and spend your days seeing the pyramids and the Egyptian Museum, to get a taste of the ancient sites.

Then I would spend several days in Sharm el Sheik, which is an out-of-this-world paradise on the Red Sea. We stayed at the Jolie Ville, a huge resort with palm-tree lined pools, a golf course and - best of all - access to the Red Sea, where we were able to snorkle along the coral reef. It was amazing! You can take day trips into the desert to visit St. Catherine's Monastery and walk up Mt. Sinai (or take a camel up). There are lots of tourists in Sharm, especially Russian (apparently this is where they come to holiday and party), but it has a much more relaxed feel than Cairo. We had a few days here, but wish we would have booked more time in this area.

Sharm el Sheik is definitely more of a party area than Luxor, which is much more conservative. They don't have the beautiful resorts in Luxor either, as most people are getting on a cruise ship to go along the Nile. The Winter Palace is a gorgeous old hotel, if you do stay in Luxor.

Regarding taking a boat along the Nile, you would have to fly to Luxor, as you mentioned, and then take a cruise boat from Luxor to Aswan. We took the more expensive boat offered by our tour company, and it had a nice bar on the boat, and also drinks were available on the roof of the boat so you could sit up there by the pool, sipping your drink, and watching the palm trees go by (be forewarned the pool on the cruise ships on the Nile are very tiny - just for cooling off in and the food on the boats is mediocre. The food in Cairo and Sharm el Sheik is very good at the nicer hotels).

If you skip Luxor you will miss some of the most important things to see in Egypt as well as missing an actual Egyptian city you can wander around on foot. It is not at all the same as Cairo. It is also a lot of fun. You would be ill advised IMO not to spend at least a couple of days there.