I was offered one during online check-in, which I accepted (and went through the process of converting my AP). When I arrived at AKL, I got RFID cards, no bands. I mentioned to front desk staff that I signed up for wristbands. They checked an iPad app, which confirmed it. (They even showed me the app.)
A few minutes went by, they brought out the grey wristbands and started activating them. Then the process stopped dead. A suit came out from the back and asked if we had questions about the bands. I said no. She said something to the effect of "we're always working on making things magical, and you're getting RFID cards." That was it. No acknowledgement that the site had been offering bands. No use of the word "wristband." Nothing.
I ended up having to go back to the front desk later and ask whether my AP would still be valid, because the site said it would not. That's when I got the other info. And my AP was valid. So the site was way off.
All of the CMs were great, essentially saying "Soon, just not yet. New technology." The suit's communication skills were poor. But again, every other CM I've interacted with has been fab. Always good to see the kids staying positive.