My schools did not deem Disney as educational, so it would be a moot point in trying to make them think so. The teachers were fine with my elementary school age kids going, even if the admins didn't think so.
I also sent my DD on a trip to NYC when in HS, thinking that visiting a new place with lots of new experiences, some educational would merit the trip being 'educational'. Nope. Unexcused absences.
It's most likely that your days off will be considered unexcused. But, you do get a number of those a year to take.
The school system here allowed her to take a cruise last year and we used the same leave and it was all covered and excused for her.