There is a lot to like about Princess. They have very good food, the service is also very good, some shows were wonderful, not all, but most. I've always liked the decor of their ships and this may sound silly, but I really enjoy the fresh water in their pools instead of the salt water most of the other lines use. They also operate their pools and hot tubs a lot longer in the day, you can actually go for a swim or relax in the hot tubs after dinner.
I'm sure you will love your Princess cruise, so far I've had 2 real nice cruises with them and hope to someday cruise Princess again, enjoy!