I have to say I agree. Sorry the presidents of both companies did not personally call you immediately after finalizing the deal.
I have to say that I feel Couples is handling this less than ideal situation in the best possible way. There are hundreds, if not thousands, of reservations affected and it takes time to get everyone contacted. I think posting the announcement on the board to give people the earliest possible heads up was a great thing to do. I also think both resorts are being very gracious in terms of working things out.
This sort of thing happened to me about 6 years ago. I was booked on a Celebrity cruise to Bermuda (my favorite cruiseline). A month before the trip, I get an email from my travel agent telling me that Royal Caribbean (who owns Celebrity) was rolling out a new, luxury cruiseline, Azamara, and my sailing was changed to Azamara. I was offered absolutely no opportunity to change cruises. In their eyes, since I was getting upgraded from a premium cruiseline to a luxury cruiseline, I should just shut up and go. Well, we were only the second trip on that ship, which was newly and hastily converted to a different line. There were broken things in the cabins, the crew was all new and didn't know what they were doing, and the excursions we had booked were all cancelled. In short, this "luxury" line fell WAY short of Celebrity for us. We even complained afterward about one particular incident that was awful (involving unsanitary conditions) and not a single person even followed up with us or sent us a "we're sorry about that" email.
CSA - May 2012
CN - May 2013
CSS - October 2013