hey Stanger and thanks for the question.
as my friends here have pointed out there is a lot of choices and heading off to the Mayan Riviera is certainly a good choice.
there are many things to do there and many tours to take as previously mentioned.  we can certainly look at getting you into a 5* resort in that location.  
we are still awaiting the new pricing for next season to get kicked into the system, but I can look at what some of the old pricing was as a comparison for you.
If your group consists of 10 or more then we can look at doing some group pricing for you as well.  Each way you cut it. I will discount it as much as I can because you are a member of CP.
I want to take a moment and address the cruise thing with you.
You picked a great cruise and a great cruise ship!
Travel dates are Jan 7, 14, 21, 28.
Interior staterooms start at 799.00 plus taxes.
One thing you will have to be cautious about on a cruise is NOT everything is included.  Your meals are of course, but most alcohol beverages, pop and stuff will need to be bought and can be rather expensive.
you will hae four stops on your cruise at some wonderful places but your time in the ports will be limited. It does allow you to experience a lot of the caribbean.   Some people love cruising, some really dont.  but you have to experience it to see if you will like it.
I have been down in the Cancun/Mayan area and truly loved it.  There is a lot to see and do.  Chichen Itza is great and you get to see some wonderful history. Isla de Majures is a great lil island off the coast of cancun. something to see and take advantage of.  the beaches are pure white sand and the ocean  is crystal clear blue.  One really cant beat it. plus in the all inclusive option. everything really is all inclusive, including your drinks and meals, most non motorized water sports and all the clubs that the hotel has to offer.
Hope this helps but buzz me if you have any more questions.
Toll free 1-888-723-4478 or email at 
axel@yellowheadtravel.com