I purchased a Grand Caravan about a year and half ago and traveled across Canada sleeping in the back. It was really comfortable the whole way, a great drive, even through the high mountain passes of BC. I didn't have a single mechanical issue the entire 5000km journey. The best vehicle purchase I've ever made.
There is plenty of room in the car, with 7 seats, the back two rows of which can be folded down or taken out completely (there are really heavy though). There are power sockets throughout, so with the right adaptor, the kids (or adults) can charge their computers or phones in the back (or front).
The car handles really well, has good power when you need it. It came with all the bells and whistles you could thing of like cruise control and power steering as well as fog lamps and split front and rear climate control. It also is installed with a rear DVD player, and a 6 stack CD changer, optional extras that the previous owner had invested in.
Will miss this car