We stay at the Fort about 3 times per year. We try to plan a day out of our WDW visit every spring and fall, since there's lots to see within just a 20 - 30 minute ride from Disney property. Mears transportation has shuttles at reasonable prices (don't remember $ at this time), and they pick up at the outpost with just a phone call the night before. We prefer our own car and just pay the $15 for parking. We've been to Discovery Cove (twice), Universal (both parks), Alligator Farm, Outlet shopping, Old Town at night, museums, and Seaworld at different times. Since you have two young daughters, I think Seaworld is a perfect "day away". Shows have changed due to interaction with the Whales, but believe me Seaworld shows are still spectacular. The Penguin exhibit is relatively new, and is wonderful. It's really cold in that section and you can see Penguins up close and then go in another area and watch them swim ... it's a huge underwater viewing room. Nice photo ops in both sections and can get the kids in the shots with Penguins. There's also a really nice Aquarium and some rides, and baby Dolphin swim areas called the nursery. Lots to see in this park and good for a full day. Had lunch at a quick serve and ice cream later. Was a nice day... a different day from WDW parks. My adult "kids" went last year and came back beaming about their Seaworld adventure. I think your family may enjoy it too.