My family with a lap toddler will occupy all 3 seats on one side. But I am not sure if row 6 is better or worse for us. We will bring a carry on bag that contains lots of toddler stuff. Can I put the bag under seat of row 4? If I cannot, then where can I put the carry on bag? The over-head bin is inconvenient because we need to get things out/put things in all the time. Also, does row 6 have more space than other rows? If it has more spaces it definitely helps the toddler since she can walk on the ground.

Thanks!