I'm also on this cruise, and the "It's nearly showtime!" email that I received from Princess, specific to my booking, stated the following in regards to MUTS:
Embark on a journey with Movies Under the Stars®
Enjoy these feature films in our open-air, poolside amphitheater (popcorn included!):
First Man (2018)
Starring Ryan Gosling, Claire Foy. Directed by Damien Chazelle. Rated PG-13, 2h 21min.
Bohemian Rhapsody (2018)
Starring Rami Malek, Lucy Boynton. Directed by Bryan Singer. Rated PG-13, 2h 14 min.
Btw, I noticed that you said you were in Ohio, do you also have a connection to Texas?
Just another curious Texan here. ;.)