Ahhh...the great bacon debate...this is a very serious question
My 11 y/o is the Grand High Queen of All-Things Bacon

(we have bacon band-aids in the bathroom, bacon salt in two varieties in the spice cupboard, chocolate-covered bacon bars, bacon bracelets, and a bacon wallet). We've found that OUTSIDE of the US, people tend to prefer "rashers" - here we call it "Canadian Bacon" (and for some odd reason, our Canadian Bacon is round. I've had bacon in Canada - both American Bacon and rashers - and never was it served round)
Her Serene Highness prefers American bacon - straight and crispy (but not burnt) with very little fat. She is MOST displeased with rashers - which she feels are fatty, limp, and underdone. We have cousins in Ireland who can't imagine eating American bacon with their breakfasts - they consider it over-cooked and tasting like salty cardboard (she feels that there is a slight strain of madness on her father's side of the family to which these cousins belong; it's the only answer, to her mind, and she feels pitty for them as their illness has obviously drastically affected their bacon taste-buds)
So I imagine that (at Disney CS and buffets) they tend to go for the proverbial "middle ground" - cooked enough for Americans but not over-cooked for Brits and Canadians. At TS breakfasts you could probably (I'm guessing) have your bacon more cooked to order - although I'm not sure if you'd be able to request that for a pre-plated breakfast.
I don't know if I should warn her ahead of time or allow the overall magic of Disney to make up for the possibility of Rashers...