Just got a cryptic email to call 1-800-MY-APPLE as soon as possible to discuss my order, subject was "Regarding Apple Watch Band Size Change" and the email address it came form looks to be an internal mailing list group, amr_apple_watch_band_size_change. Called in and explained why I was calling, was told they were submitting to the back end team to get me a replacement band sent out, then the reps computer froze up and I'm waiting on her to call back.
Meanwhile, the return of my wife's standalone braided loop that was too big is now showing its not been mailed and the shipping label/tracking number seemingly changed, despite it being delivered to Apple this afternoon.
This whole launch has been a massive cluster.
UPDATE: Got a call back and she was able to complete the request. Turns out I'll have to wait 10 days for the "back-end team" to reach out with a return label. I then have to send my size 10 band back; when they receive it, they'll send out my size 9 band. I then asked about the botched return of my wife's band; she took the tracking number the app originally provided and I shipped the band back with, as well as the returning number and order number and told me the back end team would work on that within 10 days as well. She was exceedingly polite and as helpful as she could be, but I ended the call assuming I'll have to call back on at least one of the issues.