Thanks for replying. Our 2006 Honda Odyssey can seat 3 in the second row - 2 captain chairs and another jump seat (that's what my husband calls it). My hubby was able to fit 2
Britax Roundabouts (for the toddlers) and a backless
booster (6 y/o weighs 48 lbs) in the second row. In the back row, we have 2 more backless boosters (both 4 and 5 year olds are over 40 lbs) seated by the window and the 9 y/o in the middle of them. Boy, even with a minivan, this is quite a project to do.