We had a "Grand Caravan" last time (basically, it's a Voyager) which has a 2-2-3 seating arrangement. On the midddle 2 seater bench, one of the seat backs pulled out to make a child seat which was quite good - as long as your child is about 4+. Anything younger and I would reccommend it - I'd want to use a prope seat which you can hire over there. However, it would probably be better to do this in advance.