Does packing for a lightweight backpacking trip having anything in common with packing for an overseas family vacation?
According to Brian Green there is lots in common.
Including a tarp in your day-pack makes sense anywhere you might have damp or cold-damp weather and you can string up a tarp and have a fire - for comfort or in an emergency.
When packing the camper, take time to pack a few unexpected snacks, new tools to make the trip easier or new games or books to pass time on the road or rainy days