When our cruise was canceled, a month before the sail date, we were not offered anything besides a future cruise credit with a bonus amount, in addition to our cruise fare. Nothing was offered for airfare losses.
We kept our air plans and changed our trip to a land vacation and had a wonderful trip. Would that be a possibility for you?
How much interest do you think local media would have in this issue? While it is disappointing for the OP I don't see it generating any outrage or even much interest to the average person. At best maybe a local ombudsman might look into it if the OP wasn't refunded their money for the cabana.
Definitely more of a bar band type of set up than a show. I haven't been on a Pinnacle class ship yet but the other BB Kings set ups that I have visited were packed venues with dancing. I don't think it would work well in a theater type of setting. I do think the comedians should be on the main stage though.
Yes, on ships that do not have a separate Club Orange dining room you will have a separate line at the MDR. On the Pinnacle class ships there is a separate dinning room so all going there will have the same priority.