In just a few weeks we will be making our 9th trip to WDW

. It will be our 8th time driving from northern NJ. It started out with 1 kid, then 2, then a 3rd and finally a 4th. We've probably done it 4 times with 4 kids. 2 days, 1,100 miles and while it may be challenging at times, we really look forward to the entire adventure. As a matter of fact we just had one of our disney map Sundays. That's where mom takes out the basket with all the maps, pictures, and other paper stuff we've accumulated over the years. The kids just love this on a cold February Sunday morning.
Tips:
1. Plan, plan, plan...
2. Leave Early. When we leave by 6am the day goes much better. One year we didn't leave until 9:30 and it was the worst drive we ever had. Wife was ready to kill me. That will never happen again. This year I'm going to try and get on the road by 5:30am.
3. NJ to Florence SC first day, then on to orlando the 2nd. Don't stop in Rocky Mount, it's not far enough. If you get to Florence and get an early start the next day, you are pulling into WDW by 1pm and that's with a stop for lunch.
4. TV's, DVD, walkmen, DS, anything it takes to keep them occupied. This year I'm upgrading the whole entertainment system. 4 10" screens with the ability to play 3 different movies at the same time on any of the screens. Dora for the little one, Mighty Machines for the boy, and something else for the other two. Inflight entertainment to the max. Also bringing my EVDO router so we will also have mobile internet for the laptops. Whooaaa...
5. Pack what you know you'll need in the car. Wife has to down to a science, snacks, garbage containers, wipes, napkins you name it.
6. Make it an adventure. Our kids prefer to drive over flying (don't ask me why), but we make the first day and night a fun part of the vacation, not just a boring drive down the highway. When we pull into the hotel in Florence, we have a really great indoor pool waiting for us. Then off to dinner and to bed.
7. When the meltdown begins, it's time to stop. Our meltdowns seem to happen right at meal times so it works out pretty well. Sometimes I push it a litttle too far and I end up paying for it. Funny thing is, with absolutly no planning for what exit we are going to get off, we find we stop in the same places each year, southbound and northbound. Really crazy.
I just looked at airfare this morning for the 6 of us on continental. Now granted It's easter week that we are travelling, but it was $5,500.00

on Continental. I sneak the gas receipts into my expense report and end up paying 118.00+110.00 for the 2 hotels. Ah, hello, that's lots of extra days at WDW for us...
This year since we are going during easter break (along with the entire east coast), I'm really considering a detour down route 81 to get around Baltimore and DC. We hit bad traffic in DC last august and don't want to experience that again.
Best of luck.