Just a word of warning, what was true pre-covid (as per this posting) is not necessarily true post-covid. I seem to remember from two years ago that Muster Station J on the Fantasy took us to the movie theatre, lower level. but I could be mistaken. That's why I thought I would ask in case someone might have recent experience and can confirm it's current location.
GET UP TO A $1000 SHIPBOARD CREDIT AND AN EXCLUSIVE GIFT!
If you make your Disney Cruise Line reservation with Dreams Unlimited Travel you’ll receive these incredible shipboard credits to spend on your cruise!