Disney World has so much stuff to do! If you are blessed enough to spend a full day in Disney World, and you feel good and the weather agrees with you, it will be one of the best days of your life. Unfortunately there is a chance things could get complicated, but in general if you plan and feel well you can spend all day and have fun the entire time. You can't experience everything in Disney World in 2 weeks in my opinion, so no way you can see much in one day. You don't have to worry about running out of stuff to do, its going to be too much to do.