Princess is a great cruise line IMO. They balance the classic cruise experience without being too stuffy or formal. I enjoyed the food onboard as much or more than Disney. (The bread, pastries, and deserts were miles better than what I had in Disney; I believe they are all made fresh onboard.) I also liked that the hours are much more flexible for food than on Disney.
Another thing I really liked on Princess ship vs Disney was the piazza area. There are plenty of seats in the lobby area where they do musical performances, games, etc. throughout the day. It’s a great place to have a drink/coffee and sit and enjoy the entertainment or just people watch. I cannot speak to the entertainment/shows in the theaters, because we were in Alaska, and I honestly was tired from the day and didn’t see any.
If you want details on types of shows/activities onboard, you can Google the Princess Patters for your route or ask on cruise critic board. Princess board there is active and usually very helpful.
I am trying to decide when I can go back to Princess. Your post makes me want to book now.