From what I can tell, most of the aspects of MyMagic+ are ready to go: the resort room entry, the turnstiles, the touch to pay, Photopass+, Attractions+, Fastpass+, specific interactive queues like Test Track. I would say at least 40% of today's park guests have RFID ready ticket media. (That's my guesss.) They just have to start issuing the bands to guests. For those worried about wearing one, it does sound like you can choose to only have a classic RFID card, but either way, all WDW theme parks guests will be forced with some changes. All ticket media will be RFID ready at some point because all the turnstiles will be transitioned over requiring it. Eventually, all the paper Fastpasses will also be gone. The same day of Fastpasses will still be available, but it will all be connected to the card not paper tickets. You won't need a separate PhotoPass card or separate card for Test Track. You won't be forced to share all your information or forced to use it to pay with, but just like when Disney got the biometric turnstiles, we were forced to do that as were all guests forced to switch from ABCDE ticket booklets to the system we use now. Some people will oppose, challenge, complain, or struggle with the change, but once time passes, looking back you won't see yourself going back to that old way.