Tarp is a good idea, I'll take the ground cloth to one of my pack tents. My son will probably appreciate something between him and ground. As for light, I am thinking about a little candle lattern I have never got around to using. I figure it should be good for an hour or two of light which is more then we'll need. The more I think about camping the more I like it. No driving 40 miles for a Super 8, finding a place still open to eat, getting to bed late, up in several hours to eat a bagel, drive back out to hike in before light. We'll just be there - no fuss, save gas and get more sleep and should be a good time.