There are many ways to spend the night in a park: in a tent, a cabin, a yurt, an RV or a lodge. Looking to be adventurous? Not many more things are more fun than unrolling your sleeping bag and staring up at the stars with friends or family. And as long as you reserve your site in advance and pack the necessities, you can have a stress-free vacation in the wilderness. Don't forget the S'mores!