We're doing this in December as well, and have chosen the Hyatt Regency in MCO. It's a bit pricey, but worth it for us for the convenience (and I just signed up for the Chase Hyatt credit card, so the sign-up bonus will more than cover the cost of the room).
For the record, no matter which hotel you choose, I called Magical Express yesterday to explain that we'll be coming in the night before and to make sure we would be allowed to check-in and board DME early the next morning (instead of late afternoon when our original flight would have gotten us there). The CM on the phone basically said that was no problem, just bring our bags and have resort reservation info (or Magic Bands) ready for check-in, and the CMs would direct us to the bus that will get us to our resort. The fact that the arrival fight information they have for us says we're getting in at 3:30pm and we're planning to actually show up at DME about 7-8 hours earlier than that doesn't seem to be an issue. At least not to that CM it wasn't. I guess as long as you have confirmation of a DME reservation and a Disney Resort reservation, you're good to go. The flight information is just to give Disney an approximate idea of how many guests to expect throughout the day I'm sure.
We've never used DME before, and the reservation was made through my DVC owner, so I wasn't sure about it all, but the CM yesterday put my mind at ease.