After a disatrous first time cruising with another line - DH consented to trying a 3 day....so, we did 4/3 land sea package and stayed at the Grand Floridian this past May.
For us, at that time with a 6yo and a 20 month old it was great. We rented a car and I packed so that we had one suitcase for the parks and one suitcase for the ship, and one that was "shared" between the two. Whatever suitcase we weren't using, stayed in the trunk. Worked out.
We're going for the 7 day in May 2005 with maybe one day either at the beginning or end at a park.....
Whatever you pick, have a great time!!