RebE > Fiddler of Roof also teaches that going a little off the derech leads to going off the derech ending with marrying a goy.
This also teach about what was happening with the Jews at that period. A deep view at one family v. reading books on sociology. And, of course, it is much more likely that the kids now will view the movie than read a sociology book.
The questions that Avira raises depend on the person and background. One of my friends, a Chabad Rabbi in Midwest, had a kid watching a movie together with regular Jewish school kids. While all kids were enjoying the action, this kid ran out crying… So, will some kids learn from Disney that it is OK for a single lady to stay with seven little gentlemen? for some it sounds preposterous, for others it may be the case.