I think many of us can tell similar tales. Hindsight is 20/20, as they say. I'm glad you had back up items like a shovel. Could you have spent a comfortable night in the van if it came to that?
We had plenty of clothes, food, water, and gas, so we'd have been as comfortable as two adults and three small children could have been. If there had been a safe place to pull over I'd have done exactly that.