Most of our trips to WDW we drove straight through. Once, when we were living in San Diego we flew, but that took all. day. long. We left before dawn and got in to the hotel after bedtime.
For a while we lived in the DC area, and it is about a 16 hour drive, and our kids were a lot younger, so we left in the aftrnoon and drove overnight and they slept in the car. Dh works nights a lot, so staying up all night doesn't phase him.
Now we're in Texas and it's about a 19 hour drive, so really pushing it to go straight through, but we're going to do it anyway. Partly from the cost, flying 5 people can be pretty expensive, partly because I am terrified of flying, partly from all the hassle flying entails, and partly because the people at work are always screwing with dh's vacation schedule, so we need to be more flexible about when we leave. We've had every vacation screwed up by the military since our last trip (and even then they were calling him asking him to come in! Hello, you're in CA and we're in FL, no he can't go to work that day!!), so if we are actually able to go, it will be a miracle.
Fo this trip, we are probably going to leave TX about noon-3 and get in about noon-ish I'm guessing, depending on stops and when we leave and all that jazz. Our plan is that this is going to be a resort day, so we're going to hang out at the waterpark, go to the SoA dinner show. Maybe go to DTD, definitely let dh rest if he needs it. And then we're up early the next day for the MK.
