hmm,seems like a discount on a room that doesn't have a fridge might be in order....it won't happen,but it should.
It may. While it would be nice if Disney proactively 1)informed everyone with an upcoming reservation about the no-fridge situation and 2)offered each of those guests a small discount or even a styrofoam cooler if they arrived with perishable items, it is more likely that they will respond on a case-by-case basis to those who express that they are inconvenienced.
While we have not had this exact scenario, we have had numerous other issues come up during the past 10 years of WDW visits and DH is amazing at *politely* explaining how the issue has affected us, and asking what can be done to make it right. We have never been disappointed with Disney's response. That is why we keep going back!