From what I have seen the 2016 prices for a number of cruises start where the highest tiers of 2015 ended. It seems to be that way on more of the unusual cruises and itineraries. I don't think the Dream or the standard Caribbean itineraries out of PC saw that kind of increase.
I was looking to book the Baltic on opening day and it was within a couple hundred of the 2015 cruise that still had rooms available. I passed because while I was prepared to pay 15% more on opening day, it was closer to 50% for my family vs 2015 day 1 pricing. 13K was just too much for a 7 night, IMO.
We are in TX and are booked for Galveston in 2015 and 2016 and I did notice that the starting price for 2016 was close to the ending price for 2015. I booked in late June last year and the categories had already gone up 2 or 3 times. No increases yet this year and my cruise isn't selling nearly as fast, either. Fortunately ours isn't a blackout and I reshopped it onboard last month when we were in Alaska. We didn't book onboard for our 2015 Galveston cruise and even so the pricing was far better than 2016 opening day.
You can check cruisefish.net to track the pricing of the cruises you are interested in vs 2015 pricing history. But short answer is that if you are on an unusual itinerary or near a holiday, this was way more than the standard increase that people complain about.