For a similar situation, check out what happens every winter in Quartzsite Arizona. Quartzsite is a small town in western AZ, with a population of about 1200, and one traffic light. During the winter the population swells to about 500,000, most of it out in the middle of the government owned dessert. Only thing the government provides is a dump station and potable water source. Other than that, there is dirt! Last time we stayed there, the cost was about $180 for the whole season or less than $1 a day. Check it out for some ideas.
