From Virginia we take the Amtrak Autotrain. Typically we get our car loaded on the train and leave at 4pm Saturday. We usually get a (very small) sleeper compartment. Once we start rolling they have a wine tasting of Virginia wines, and we typically choose a 5pm dinner seating. Dinner is very nice and you usually have 5 choices of either a beef entree, a chicken entree, a pork entree, a fish entree, or a veggie entree. All restaurant quality cooked to order. After dinner we will take in the 7pm movie. Around 9pm or later we will tuck ourselves into bed... not the most comfortable, but a bed and privacy. The next morning we get up and maybe take a shower. Then we go get something for breakfast (muffins, cookies, fruit, etc. is available). Then we arrive in Sanford (very close to Disney) at around 8am Sunday. Then we drive to our resort and hope they have a room ready. More than half the time they do.
We do this because it is sooo much easier than driving the whole way, which we have, done. And it is sooo much easier than flying, which we have done. AND... we bring everything we could want with us.
All things considered.... we pack our car with everything we want, like beach chairs, umbrella, boogie boards, beach towels, some food, wine, whatever clothes we want, and whatever else we want to fit into our car. We don't have to stand in a line to go through security and we just hop the train... have a blast (sometimes we'll stay up late playing cards with other riders) and arrive near our destination with just about everything we need. And we don't need to rent a car. We enjoy the train trip and taking in the views and neighborhoods along the way. We typically reserve the Sunday to Thursday days at the resort, but the train trip to and from makes it a nice 7 day trip.
We are fortunate to have this arrangement available. We are happy with it.