I can safely that I am a Disney with kids veteran having taken 10 or 12 trips with kids in the last 9 years. Your daughter may want a stroller after an hour or two. Or if you have a big REI/Kelty backpack for her, you might consider taking that.

By sedan, did you mean that you are taking a limo? We always use Tiffany Towncar. We've been really pleased with them.

Check out www.wdwig.com for endless amounts of Disney information including what characters are at what meals when. The character meals do keep kids entertained, allowing grownups to have a more leisurely meal.