You obviously have no clue as to how analytics work or predictive patterns developed from software programs.
The bathroom is the easiest to explain because most people understand that their health records are private information. Disney can use the data derived from the knowing where you ate to the frequency / length of time in a rest room and extrapolate that after 100 people ate the chili fries at Peco's bill for lunch, later in the day 89 of those 100 then spent a disproportionate amount of time in a rest room compared to the other persons coming and going at that time. Will they use that info to double check their food handling or try and sell you some Pepto Bismal?
Or over the span of a 7 day trip, they would know, without virtually any doubt, who had IBS for example.
It's the exact same way Target knows when you are pregnant and haven't told anyone yet, in fact Target may know you are pregnant before you do, this story is with 3 year old tech and only from in store purchases-
http://www.forbes.com/sites/kashmir...teen-girl-was-pregnant-before-her-father-did/
Target is from a much less intensive collection pool, not from tracking every single thing you do 24/7 for a week.
Why would Disney care about Joe Blow from Idaho? $$$$$$ MONEY $$$$$ Disney is in the business of making money, lots of it. Their "partners" extend well beyond photopass and reach under under the behemoth umbrella of ABC.
So you don't care about Disney selling you bathroom usage to an insurance company, there is also the fact that nothing is unhackable and all that data can be stolen and used for much more vicious purposes than selling that info to even larger processing centers overseas without even the minimal oversight and laws here in the US about this data.
After knowing all this, I still have used MB's twice however I have made an informed decision on the matter. The ignorance surrounding this topic is astounding, I've never seen so many head in the sand, everything is hunkydory jibberish nonsense in my life.