I have to agree, a long plane trip is almost better because you get settled in and are committed to the full day of travel. They give you snacks, we pack snacks also, they serve juice, water, soda, they show a movie, bring your own headset or we pack our DVD player and let the kids watch movies. Sleeping is hard but the kids just seem to fall off about mid flight. We also fly in the afternoon or evening if we can.

Might I suggest you consider just taking a long flight and then have a long holiday in WDW? It really is worth it.