The point cost of a cruise varies according to many factors - length of cruise, date of cruise, stateroom category and number of adults & children and ages of the children.
For example, a 3 night cruise departing March 13, 2003 (regular seasons) in a cat 8 (deluxe, ocean view stateroom) is 117 points each for the first two people in the cabin. After that, children 2 and under are 15 points, children 3-12 are 53 points and all others (13 and over) in the same cabin are 60 points. I am not familar enough with the Disney ships to know if any of the cat 8 cabins will sleep 5.
If you send me a PM with your email address, I will email you a .pdf file that contains the point requirements for 2003 cruises.