It's not impossible, it's just not smart business for Apple (or Android, or anyone) to put a super high frequency RFID beacon into their products. It's currently used for toll collection (ez pass, etc) on highways and magic bands, and nothing else widespread that I'm aware of. The circuitry is bulky enough (look up a magic band dissection - all of that circuitry is for the long range RFID and they made it as small as possible), and there are other ways of accomplishing it's uses without putting it into smart devices. There's no real benefit to consumers to put it in to devices, it just costs extra money.
If Disney were to do it, they would have to use in-phone GPS and an internet connection rather than RFID. It can accomplish the same result of pinpointing location and exchanging information. The tech doesn't have to be the same, just the "experience." But it means reprogramming everything in the entire system to handle it. Now, they may be doing it for the future, but again, it's blue sky and just not important. Look again in 10 years.
