Any advice on "must see's" at Alaska ports (Skagway, Ketchikan, Juneau)? We sail July 12th out of Seattle. This is our 2nd cruise but first with Princess. Looking forward to it. I'm a little apprehensive however because we are normally "warm-weather beach vactioners" so this should be different. Temps in Alaska are averaging around 65?? I doubt we'll be using the pool on the ship. Any advice would be so greatly appreciated. Charlotte.