We made a trip to Quartzsite before the winter “snowbirds” began to arrive to see exactly what the area looked like and what it had to offer. It pretty much looks like this for about one hundred miles. Quartzsite does have some small businesses and several campgrounds (that do offer full-hookups and some amenities). The closest Walmart is in Yuma, which is about 90 miles (one-way) south of Quartzsite. Lake Havasu which is just north of Quartzsite does have many chains and franchises, as well as Blythe (California) directly to the west.
The area is known for boondocking. Boondocking is an option that many regular RVers try (even for a short while). It is affordable and it is a great way to test your independence. There are many books and articles written on the topic and if you are interested, you should do your research. If you know someone who has had experience boondocking, you should also pick their brain on tips and advice on this type of living.