Hi there, Stephanie! Thanks for sailing to planDisney with your question. Welcome!
I'd be happy to share more about what you can expect during your upcoming sailing aboard the Disney Dream. The current lineup for movies in the Buena Vista Theatre is as follows:
    - Elio
- Lilo & Stitch (2025)
- Moana 2
- Zombies 4
- The Fantastic Four: First Steps
- Freakier Friday
- Tron: Ares
You can see the movie showtimes and the list for all other entertainment and activities within the Daily Activity Schedule in the 
Disney Cruise Line Navigator app once you are onboard the ship. If there are any activities listed that you don't want to miss, click the heart icon next to those listings. If you allow notifications from the app, you'll receive a notification about 15 minutes before the activity is set to begin.
My favorite feature of the Disney Cruise Line Navigator app is the ability to book a placeholder to secure a future cruise at a discount. I take advantage of this onboard offer every time I sail because of the great flexibility, and most itineraries and stateroom categories are included. Placeholders are fully refundable, too. Booking a placeholder is one way to make the end of your sailing a bit easier. You can say "see ya real soon!" instead of "goodbye" to Disney Cruise Line. 
Have a wonderful sailing! Bon Voyage!
Adrianna