The Crown is a great ship. Been on her twice and always had great service.
Try to do the 'Chefs Table', if it is available. Call the dining room as soon as you get aboard to sign up. It is fantastic.... You won't be disapointed with the galley tour, meeting and being served by the Chef and special servers... not to mention the 13 courses with wines and apertifs, etc...
Enjoy your trip!