Well, recently, due to poor planning and procrastination, I've had twice when I needed to go grocery shopping during the day, which means all the kids go with me. I was gearing up for it the way you'd prepare for an ice storm. That is, I was dreading it. As it turns out, it was just fine. It makes a huge difference when your youngest are 3 years old, apparently. They were much better at following the rules and having good attitudes. (Lydia did throw 3 fits, I should mention, but I was able to talk her out of it and we kept going. We didn't have to leave the store & start over, thank goodness!) We went to Sprout's, WalMart, and the bakery. We had 30+ grocery bags when it was all over. Thankfully, I have 6 able helpers to get it all put away in record time.
We're not going to fit into our retro-fitted minivan much longer. For now, we have skinny kids and it works. But there may come a time when we'll need to seat more than just six kids. ;)