There are 18 of us going in January however we know that that is ALOT of family time if we are together all the time....so we are doing it this way.
We picked specific things that we are doing together, ex: MK on Thursday, Hoop De Doo Friday evening, then we are going to the campfire movie at fort wilderness. This way we aren't over planned and we don't feel obligated to stick together the hole time. Everyone wants to do something different sometimes.
As far as the resort accomodations and airfare, we are actually all booked seperated and all staying at different resorts, that way we can check out all the resorts and such.
I probably haven't helped you much, but it isn't much fun to go on a trip when someone is planning every minute that your there....