Here now at BWV. I did online check-in on the day that I could. When the Magic Bands did not arrive, I realized that the info had been lost. I re-selected our MBs and they were available at the resort. When I arrived at the resort, they said they did not have a record of my online check-in. Then a couple minutes later, said that I had indicated that I would not arrive until midnight. Well, my flight were scheduled to arrive at 9:30am, and never changed. But that was a reason our room wasn't ready.
Having said all that, it was really no big deal, and we are having a great stay!