You will have a wonderful time. When we did the Atlantis cruise to Alaska, we made some great friends who we are still close to. And the natural beauty of that area is spectacular.
Contrary to what some people imagine, a gay cruise is not a floating bathhouse. Certainly there are people hooking up, but it's behind closed doors -- keep in mind that the crew of the ship is largely straight, and the cruise line has a reputation to uphold.