I booked a Guaranteed Solo Balcony for an upcoming cruise on the Getaway.
Yes, this did happen.
And likewise, I was assigned a regular balcony cabin. On the invoice, it was listed as category BT-BB.
Unfortunately, it doesn't surprise me that the initial key card didn't allow the poster to access the solo lounge. And it's no surprise customer service gave the poster a hard time about it.
I hope that things will go more smoothly when I board the Getaway.