This is probably very true. I used to umpire slow pitch softball for a very large softball complex. They sold quite a bit of Coke product. So much so, that not only did Coke give them their products for free, but even paid them to use their product exclusively.
I don't know how that works as a business model for Coke. I guess it would be more of an advertisment or presence sort of thing to keep individuals buying it in convenient stores, or other venues.
Usually the companies will either throw in the dispensing equipment for free with purchase of the syrup or the product for free as part of the lease on the dispensing equipment. It will depend on the licensing agreement they have with Disney for exclusive soda rights on property.