You couldn't be MORE wrong. No this is NOTHING like what
Amazon, or the local grocery store, or any other retailer does. It would be equivalent if these places had all your demographics and tracked you walking through the store, knew how many wer in your group and their ages, and knew how long you stopped and at what products.
You have to be kidding!? Knowing what you buy a non-issue?! Grocery stores will place a stand with junk widgets in a pink display right in the middle of an isle specifically because X% more widgets are sold and Y% more when it is pink instead of blue. Important stuff! Grocery stores offer you that discount card so they can track your spending. They would LOVE to know everything about you and track every movement if they could figure out a way.
Data mining isn't the only reason Disney did this. It is only 98% of the reason. You have to understand what they can do with this. Stretch your imagination a bit:
Not only do they know a person went into a store, spent 12 minutes, and didn't use a credit card (In the cash example), but they will know exactly how many people spent cash, how long that group spent in the store, what their age, home place, and party size were. They will know if this party had a credit card and just chose not to use it. They will know if this trip in the store the entire party was there or if no kids were there. They will know how many days, what parks, how long this group spent in the park, whether or not they stayed on property, how often they visit, etc., etc., etc. AND they will know how long they were in the park before they visited the store. AND they will know what the weather was that day to know at what temperature people go into the store and how that affects spending both cash and credit card!
They will know if they move a planter where people sit 30 feet from its current location outside the store, how that will affect spending. They will know if older patrons spend less because they sit further from the store.
They will know which pavilions in World Showcase take the longest to walk by for people from certain countries and certain ages. They will know how a 55/51 year old couple move and spend money when by ourselves and how we move and spend money when the kids are with us. And how we change travel patterns when it rains and is warm versus when it rains and is cold. They will know how much people that attach a credit card to the band spend on the credit card and how much those that don't attach it to the band spend on the credit card. And their ages, stay length and home state/country. They will know what line lengths we will tolerate and what we won't and how much weather affected this and which rides. AND they will know in each scenario whether or not and how this affected our spending!
I could sit here and list at least 100 different things Disney can track and cross reference with each or all of the other items. There is an endless amount of information that is extremely, extremely, EXTREMELY, valuable. Human beings are fascinating creatures. While they have free agency and make individual decisions, they also have relatively predictable response to stimuli if you can study the effect. Changing the color and design of a store exterior may affect the money spent. This is something measurable. Maybe it makes a difference to 50 to 60 year olds but not 20 to 30 year olds.
There are two levels to this value that will make Disney money:
1. They will know the impact every change has on every demographic group. They will be able to make changes that cause spending changes. For example: Placing hats in the window of a particular store attracted a particular age group without children and resulted in 8% more hats sold, but placing Frozen merchandise in the window made a higher percentage of younger families stop in the store and sold 12% more Frozen merchandise at twice the profit of the hats. OK, change the window display back to Frozen. Oh and this is true in the summer but not the winter so change it back in the winter.
2. They will know how changes affect our habits and will know how to improve our experience to keep us happy. This is a more indirect relationship to their profits but still very important. This might mean they find that the placement of walkways and planters makes people go left instead of right and slow down in a crowd, stop, and neither shop or ride at one particular point. They rearrange the walkway and find people move differently and whether or not it is an improvement. AND they will know the demographics of the groups whose behavior changed and how much and in what manner each groups behavior changed.
This cannot be overstated. IT IS PURE GOLD! No one has every been able to track this number of peoples movements and actions in a theme park before and tie it back to specific data about those customers.
P.S. Disney has given up on the official Happiest Place on Earth and The Place Dreams Come True because the public won't follow it. It is still official but they no longer stick to it. For some time Disney has been calling WDW the happiest place on earth in various venues because 98% of the people do. And it wouldn't do for Disney to run around correcting everyone, "No! It isn't the happiest place on earth! No, it isn't the happiest place on earth!"