I really don't think it's quite as bad as switching whenever they want. I'm in Central Texas, we have to pick before the start of each grading period (some weeks before actually) and they have home room teachers dedicated to in-person and virtual. The kids have synchronous learning throughout the day until nearly 3:00, (4:00 Eastern). This is grades 2 & 3.
I really don't think virtual learning will have much impact on Disney. Parents who would have pulled their kids for a trip pre-COVID-19 might still do so, but most still won't.
It would really vary kid to kid anyway, if they could do virtual at Disney. One of mine could probably do OK. The other one struggles to focus at home. Put a castle out the window and no way!