I've always thought that one of the primary ideas behind Marriott Rewards was to reward frequent business travelers by allowing them to use their points for a vacation stay. All Inclusive resorts are common in many of the best beach locations in the world and finally Marriott has added some All Inclusive deals to your web site. What's baffling to me is why you don't allow points to be used for All Inclusive reservations. As a minimum you should do a points plus cash option.
One more example of how Marriott doesn't effectively show their appreciation to their frequent business travelers.
Once upon a time a handful of Marriott resorts in the Caribbean had an add on all inclusive option. I believe it was 90K points for 5 days for 2 adults.
I suspect that guests buying things on property is the only way resorts make money off reward stays and they asked for this option to be eliminated.