People movers...

with odyssey's you can fold up one of the seats and not the other so have some boot space, but then you have a kid in the back row with a pram/groceries next to them so could be not easy.so the back row is best suited to an older child, most likely 5+ (in my opinion).

My other choice would be a Nissan Serena van.
they are very roomy in the boot space when all seats are up and set out, and 3 of the rear seats have lap belts and the other 2 are lap belts, or when all seats are folded away they hold big furniture. (prams are easy to secure in a standing position so the dont fall out when the boot is opened, by using bungy cords attached to the head rest on the seats)
this listing here has good pictures.

We just bought a Ford Territory, and I LOVE IT!@!! Could not reccomend it highly enough! It has HEAPS of boot space, even with the back seats up I still got in a full suitcace, some pillows and other stuff...and best of all, you get a nice looking vehicle AND the option of 7 seats without the ugly look of a van/station wagon/people mover...I'm a bit of..well alot of a snob..I spend alot of my day in my car and I wanted something practical but no comprimise on style/looks and I HATE the van/wagon thing and I always think that men who drive people movers look like they have lost the will to live hahahaha...just cos you have lots of people to move dosen't mean you need an ugly car, lol.
Lol so yeah, LOVE the territory. (Also test drove an oddysey...wasn't keen on the look and wasn't very ooopmhy. We have a caravan so needed a bigger engine.)