You do have to register to stay. Some areas are free for 2 weeks while other areas are long term and have small fees based upon your length of stay. No facilities, of course, but there are dump stations and fresh water available within a short drive. If you drive N and S of QZ a short distance you will find the parking areas well marked with LaPosa N and S (both S of town) the most popular. Once in an area you can park where ever you please across 1000's of acres. Close in for some and way, way out for others. You can even join the nudists if you select the right area.