Just got back from our trip to Disney. We left at 12:15 am on Sat June 24th from what I'll call the Northeastern part of Central Jersey which will explain why it takes about 45 to 60 minute to get to the turnpike. It was smooth sailing. Del Memorial Bridge at 1:45, Baltimore at 2:45, DC 3:30, stopped for gas in Petersburg Va at 5:45, then my notes get fuzzy. We did hit traffic in SC around mile marker 65 to about mile marker 50. We arrived at POR @ 4:30. So with the stops for Gas and once at Dunkin Donuts, I think we made great time. We also drove back straight thru where we left POR at 7:30 am and got back home @1am. We hit a terrible rain storm in NC which slowed us down and then another one on the NJ Turnpike.
My thoughts on driving straight through. I'm not sure I would do it again. My son drove some of the way down but I'll put it this way, when we were on Test Track, I made the decision that I was going to drive home only since it reminded me of his driving

I didn't mind driving home because after walking so much on our trip, it was nice to sit down for awhile.