Some of the days are long, but this will be spread out over 11 days. I'm used to spending long days (20 hours) on the road with my family. It's going to be rough but I think we will manage. I don't mind spending 15ish hours in the car if we can stop whenever we feel like it. When I used to travel with my family it was no stops unless we neaded gas. This will be much more relaxing.

As for compatabillity, I live with these girls, so I know what it is like ;) And we just got back from Michigan's upper peninsula last weekend (a 9 hour drive) and survived. It will be an interesting experience, to say the least.

Thanks for the tips, though! It is good to have the opinion of someone who is unbiased. I'd still love to hear ideas for places to stop, as we are in no real hurry to get anywhere and don't mind driving at odd hours of the day if we have to (we are college students used to staying up until 5 am and getting about 3 hours of sleep a night...exhaustion if a permanant state of being for me ;) ).