Hi kgallicchio, welcome to Cruise-Chat. Sure hope you have a wonderful cruise, she's a beautiful ship. We haven't sailed on her, but have sailed on 4 Princess ships. Each of them has been beautiful and clean. The best advice I can give for Alaska is layers and some type of rain protection. It can be hot and sunny or cold and rainy, it's very unpredictable. Be sure to bring lots of film or extra memory cards, you'll be taking tons of pictures
Best wishes for a fantastic cruise, and once again, welcome aboard!