I think the point is why does this "family time" (which I agree is important) have to happen at Disney? Couldn't you have the same benefit during a "staycation"?
I get the "jumping through the educational experience" hoop. When we realized our kids were going to miss school when the year got extended, I talked to the principal, told him what happened, and HE said to ask for the educational excuse. It used to happen a lot on here IIRC, but parents would come online and justify on the Dis how a trip to Disney was "so educational" and the kids would learn "so much". When I would ask if they took kids to the grocery store for the educational possibilities there (budgeting, nutrition, math (portion size & cost/unit)), of course the answer was "no".
Just own up to it and accept the consequences. Whether that means people judging you on the internet (oh no!) or not being able to turn in grades, it's still your choice.