Boondocking
Definition of boondocking from Wiktionary
1. To camp in a dry brushy location.
2. To stay in a recreational vehicle in a remote location, without connections to water, power, or sewer services.
Boondocking is one of the popular ways of camping with your fiberglass egg, especially in the Western US with the availability of all the BLM land. Boondocking requires a bit of special setup of your trailer in order to stay out "off the grid" for an extended period of time. The sites listed below are very good resources to help with learning about the basics of boondocking.
Since a big part of Boondocking is being able to recharge batteries and supply power you may want to browse through SOI's Solar Resource section. There is a wealth of information there that can help you prepare for a week or longer off the grid.