What they said - you don't need a theme camp. While there's lots of talk of camps and joining them on these boards, tens and tens of thousands of participants just come out and camp on their own or in small groups.
Don't be embarrassed about the RV, it is what it is. And as you'll soon see, there are plenty of others who come out there in them too. Bonus points if you're able to decorate or disguise the behemoth, or at least cover up the commercial signage on the sides. If you want an easy way to score points with your neighbors, get a cheap drinks blender when you're getting your supplies in the states, and then stock up on juice concentrates and margarita/daquiri mix (as well as your alcohols of choice). Then once you're out in the desert, you're just a bag of ice away from being able to serve up frozen/blended drinks.
