believe I am correct in saying formal nites are Tues and Fri and dress code in Sabatinis is casual and I would suggest that you pick nites other than formal because food in main dining rooms first class on these nites.You will never finish all the food seved in Sabatinis as they bring out course after course and your only selection will be the main entree.
Went on the Inaugural cruise and had so much fun. I agree with the other respondents, formal nights in main dining rooms are great. I did eat at Sabatinis both on the Caribbean and Diamond Princess. The first time we dressed up cocktail attire, 2nd time just nice slacks and I dont even think my hubby wore a sport coat. It was great esp. the service and eating all 12-14 courses! GO HUNGRY! Dont forget to book a chair for Movies Under The Stars. Oh- There is also a quiet very small pool and no kids at the Lotus Spa. Have a GREAT time.