I have done the quilt and camp thing every year. I take my babylock audrey machine and some extension cords and go to town! i usually will only work on smaller projects, or blocks, not something too big. I also put down a vinyl table cloth. I have used both the picnic table provided and a folding table.
We only have a small pop up camper so no place to sew in there! At night or when we leave the site, I lock my machine up in the car.