We are going to be leaving October 30. I figure it won't travel as fast as if it were in the middle of the night, but 78 should not be totally slow right? Last year DC added about 45 minutes!
And when you say your times include stops...can you elaborate? LOL We have 3 kids so our stops and yours are probably different I'm guessing. Last time we stopped 3 times. Two were to get gas and go to the bathroom...so 10 minutes. The third was to eat...but McDonald's so like 20 minutes tops. Oh...then we needed to stop one last time about an hour out of WDW because we didn't fill up with the McD's stop.So, 4 stops...45 or so minutes. I'm guessing we will do about the same this time too. But, not make an extra stop. Rather, we would eat when we stop for the first fill up.
Also, we will need to get to a store and get water and some other items. What is a good place to go for that? Doesn't need to be on the way. We will probably get that after settling in.